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Long-term care facilities (LTCFs) are high-risk settings for SARS-CoV-2 infection. This study aimed to describe SARS-CoV-2 seropositivity among residents of LTCFs and health-care workers (HCWs). Subjects were recruited in January 2021 among unvaccinated HCWs of LTCFs and hospitals and residents of LTCFs in Northern Italy. Information concerning previous SARS-CoV-2 infections and a sample of peripheral blood were collected. Anti-S SARS-CoV-2 IgG antibodies were measured using the EUROIMMUN Anti-SARS-CoV-2 QuantiVac ELISA kit (EUROIMMUN Medizinische Labordiagnostika AG). For subjects with previous COVID-19 infection, gender, age, type of subject (HCW or resident), and time between last positive swab and blood draw were considered as possible determinants of two outcomes: the probability to obtain a positive serological result and antibody titer. Six hundred and fifty-eight subjects were enrolled. 56.1% of all subjects and 65% of residents presented positive results (overall median antibody titer: 31.0 RU/ml). Multivariable models identified a statistically significant 4% decrease in the estimated antibody level for each 30-day increase from the last positive swab. HCWs were associated with significant odds for seroreversion over time (OR: 0.926 for every 30 days, 95% CI: 0.860-0.998), contrary to residents (OR: 1.059, 95% CI: 0.919-1.22). Age and gender were not factors predicting seropositivity over time. Residents could have a higher probability of maintaining a seropositive status over time compared to HCWs.

The debate on vaccination mandate was fuelled over the past two years by the COVID-19 pandemic. This study aimed at overviewing vaccination strategies and corresponding vaccine coverages for childhood vaccinations before the pandemic and for SARS-CoV-2 in high-income countries. A qualitative comparison was also performed between the two contexts: unlike for childhood vaccinations, only one European country (Austria) imposed generalised COVID-19 mandates, most countries preferring targeted mandates for higher-risk categories (Italy, Greece) or workers in key public services (Finland, Australia, New Zealand, UK, Germany). Many countries (Norway, Sweden, Netherlands, Portugal, Spain) confirmed their traditional voluntary vaccination approach also for COVID-19, while others (Slovenia and Hungary), historically relying on compulsory vaccination strategies, surprisingly opted for voluntary SARS-CoV-2 vaccination, with unsatisfactory results in terms of immunisation rates. However, no tangible relationship was generally found between vaccination policies and immunisation coverages: data show that, unlike some countries with mandates, countries where vaccinations are merely recommended could achieve higher coverages, even beyond the recommended 95% threshold. The COVID-19 experience has enriched pre-existent vaccination strategy debates by adding interesting elements concerning attitudes towards vaccines in a novel and unexplored context. Interpreting the available results by considering the different cultural contexts and vaccine hesitancy determinants can help to better understand the complexity of the relationship between policies and achieved coverages.

Background Healthcare-associated infections (HAIs) represent a major Public Health issue. Hospital-based prevalence studies are a common tool of HAI surveillance, but data quality problems and non-representativeness can undermine their reliability. Methods This study proposes three algorithms that, given a convenience sample and variables relevant for the outcome of the study, select a subsample with specific distributional characteristics, boosting either representativeness (Probability and Distance procedures) or risk factors’ balance (Uniformity procedure). A “Quality Score” (QS) was also developed to grade sampled units according to data completeness and reliability. The methodologies were evaluated through bootstrapping on a convenience sample of 135 hospitals collected during the 2016 Italian Point Prevalence Survey (PPS) on HAIs. Results The QS highlighted wide variations in data quality among hospitals (median QS 52.9 points, range 7.98–628, lower meaning better quality), with most problems ascribable to ward and hospital-related data reporting. Both Distance and Probability procedures produced subsamples with lower distributional bias (Log-likelihood score increased from 7.3 to 29 points). The Uniformity procedure increased the homogeneity of the sample characteristics (e.g., − 58.4% in geographical variability). The procedures selected hospitals with higher data quality, especially the Probability procedure (lower QS in 100% of bootstrap simulations). The Distance procedure produced lower HAI prevalence estimates (6.98% compared to 7.44% in the convenience sample), more in line with the European median. Conclusions The QS and the subsampling procedures proposed in this study could represent effective tools to improve the quality of prevalence studies, decreasing the biases that can arise due to non-probabilistic sample collection.

According to recent investigations, the risk of M. chimaera contamination of heater-cooler units (HCUs) has reached global proportions. Our aim was to field evaluate a protocol for early detection of M. chimaera contamination. We assessed the presence of viable M. chimaera in 395 water samples obtained from 48 devices (HCUs and extracorporeal membrane oxygenation) by Real Time PCR. Thirty devices were NTM positive, of which 14 were contaminated with M. chimaera. The most frequently contaminated devices were the Stockert 3T. Noteworthy, Stockert 3T devices were positive for M. chimaera. In conclusion, this study introduces novel PMA-PCR designed to specifically detect M. chimaera in HCUs and ECMO devices; this method can replace the culture method for continuous microbiological surveillance. The timely detection of M. chimaera contamination can then be used to improve effective management of the devices.

Objectives and design:Data from the Italian national point-prevalence survey (PPS) of healthcare-associated infections (HAIs) were used to evaluate antimicrobial usage (AMU) in Italy and to identify targets for future interventions.Methods:The second Italian PPS was conducted in 2016 as part of the European PPS initiated by the ECDC. We compared these results with those of the first national survey, conducted in 2011.Results:An overall AMU prevalence of 44.5% (95% CI, 43.7–45.3) was estimated in 2016. No significant change in AMU prevalence was detected when comparing data with the first survey. In both surveys, the most prevalent indication for AMU was the treatment of infections. Considering all indications, penicillins plus β-lactamase inhibitors (BLIs) were the most commonly prescribed antimicrobial group in 2016; they were used significantly more than in 2011, and piperacillin plus BLI was the most frequently used agent. Broad-spectrum agents accounted for >60% of all antimicrobials for systemic use. No significant increase in the use of carbapenems occurred in 2016. Stable or decreasing carbapenem-resistance levels were identified in this study, although these levels remain alarmingly high for both Klebsiella pneumoniae (50%) and Acinetobacter baumannii (>75%).Conclusions:These results can be used to identify priorities and targets for interventions that promote more prudent use of antimicrobials, improve healthcare quality and patient safety, and combat the emergence and spread of antimicrobial-resistant pathogens.

Risk Management in healthcare: results from a national-level survey and scientometric analysis in Italy Risk management in healthcare, intended as all processes employed to detect, monitor, assess, mitigate, and prevent risks in healthcare facilities and safeguard patient safety, is a crucial component of Italy’ National Health Service. Aim of the current study is to assess the role and progress of research and training, in the field of Risk Management. We carried out a scientometric analysis to quantify and describe scientific outputs on Risk Management at the global and national level, over the last forty years; in addiction, we conducted a national-level cross-sectional survey to systematically retrieve and assess research and training activities within Italian postgraduate medical programmes in Hygiene and Preventive Medicine. We report increasing scientific production on Risk Management-related topics from 1980 to 2017 at the global level (12% annual increase rate). Clinical Trials and Systematic reviews/meta-analysis make up for respectively 5% and 6% of global scientific output. Italy ranks 4th for scientific production, after USA, UK and Germany. 88% of Italian postgraduate medical programmes in Hygiene and Preventive medicine research on Risk Management, 42% through international collaborations. The main research themes are Healthcare-Associated Infections (HAIs) (97%), analysis of organizational models for safety in healthcare (62%), while training is focused on internships (87%) and academic lectures (73%). While research provides the evidence required to plan, implement and monitor effective interventions in healthcare risk management, training allows its dissemination in a synergic action to promote the value of patient safety and quality of care. (www.actabiomedica.it)

Summary Aim To evaluate the changes in antimicrobial consumption and multidrug-resistant microorganism trends after introducing an empiric antimicrobial therapy manual to support antimicrobial stewardship. Methods A 4-year prospective interventional study assessed the effect of introducing an empiric antimicrobial therapy manual in medical and surgical wards during two periods: pre-intervention period (January 2015–May 2017) and post-intervention period (June 2017–December 2019). Outcomes included microorganism trends of bloodstream infections (BSI) for Klebsiella pneumoniae carbapenemase-producing bacteria (KPC), extended spectrum beta-lactamase ESBL-E. coli, meticillin-resistant Staphylococcus aureus (MRSA) and Candida albicans. Also, Clostridioides difficile infection (CDI) episodes were included. Rates were normalised per 1000 patient-days (PD). Antimicrobial consumption was assessed as defined daily dose (DDD)/1000 PD in interrupted time series analysis. Results In medical wards, we observed a significant decrease in the consumption of piperacillin-tazobactam and a decrease in the trends of tigecycline and vancomycin consumption. In surgical wards, there was a significant decrease in consumption of fluoroquinolones and piperacillin-tazobactam. This decrease was maintained in trend for all the antimicrobials but was significant for tigecycline only. In medical wards, there was a significant reduction of MRSA and C. albicans. In surgical wards, we observed a decrease in MRSA, ESBL-E. coli, C. albicans and CDI. KPC cases decreased by 22.5% in medical wards and 74.3% in surgical wards. Conclusion The results suggest that a persuasive educational approach to antimicrobial stewardship, with the introduction of an empiric antimicrobial manual and continuous education, resulted in reductions in both antimicrobial use and healthcare-associated BSI caused by multidrug-resistant organisms. More studies with longer follow up are needed to investigate the effect of antimicrobial stewardship on clinical outcomes.

Antimicrobial stewardship (AMS) programs are effective strategies for optimizing antimicrobial use. We aimed to assess AMS programs implemented in acute-care trusts of the region of Piedmont, Northern Italy.AMS programs were investigated via a survey addressing structure, process and outcome indicators. For outcome indicators, annual means for the years 2017-2019 were considered, as well as the percentage change between 2017 and 2019. Outcome indicators were investigated in relation to structure and process scores using Spearman correlation.In total, 25 AMS programs were surveyed. Higher scores were achieved for process over structure indicators. Improvements in alcohol-based handrub usage (+30%), total antimicrobial usage (-4%), and percentages of methicillin-resistant Staphylococcus aureus and carbapenem-resistant Enterobacteriaceae over invasive isolates (respectively -16 and -23%) were found between 2017 and 2019. Significant correlations were found between structure score and percentage change in total antimicrobial usage and carbapenem-resistant Enterobacteriaceae over invasive isolates (Spearman's ρ -0.603, P .006 and ρ -0.433, P .044 respectively).This study identified areas for improvement: accountability, microbiological laboratory quality management and feedback to clinicians. Improving the organization of AMS programs in particular should be prioritized.Repeated measurements of structure and process indicators will be important to guide continuing quality improvement efforts.

Introduction Hand hygiene is an important measure in infection prevention to decrease transmission of microbial pathogens. Especially in these last two years, COVID-19 pandemic brought focus on the importance of a correct and frequent hand hygiene. Currently, direct observation is considered the gold standard for hand hygiene surveillance. The purpose of this observational study is to assess healthcare professionals hand hygiene compliance during the World Health Organization's ‘Five Moments for hand hygiene'. Methods In this study we examined perceptions, compliance, techniques, and contextual issues of hand hygiene practices among healthcare workers, in three different hospitals. Twelve different wards were observed, including ICU, surgical wards and medical wards. At least 200 hand hygiene opportunities (based on the WHO's ‘Five Moments') were recorded for each ward, using a mobile application called SpeedyAudit™. Results The results showed highly variable levels of adherence to the hygiene practices, with compliance rates ranging from 20% to 84%. There was also a wide variability of compliance between the different moments, with compliance rates ranging from 75% after touching patient surroundings to 59% before touching a patient. Overall, physicians had the worst score among the healthcare workers, resulting in 55% of compliance, while social health operators performed best with 70%. Conclusions There is still a huge variability in hand hygiene among healthcare workers. Despite the conceivable Hawthorne Effect influence, general compliance was not optimal. Overall hand hygiene adherence and knowledge should be achieved by implementing hand sanitizer distribution, offering further education and raising awareness on the importance of a correct hand hygiene, for the sake of both patients and healthcare workers. Key messages Hand hygiene adherence and knowledge should be achieved by implementing hand sanitizer distribution, offering further education and raising awareness on the importance of a correct hand hygiene. There is still a huge variability in hand hygiene among healthcare workers.

Objectives Hand hygiene is essential for infection prevention. In Piedmont (Northwest Italy), hand hygiene is routinely monitored through 2 surveillance systems, the World Health Organization Hand Hygiene Self-Assessment Framework (HHSAF) and alcohol-based hand rub (ABHR) consumption. This study was aimed at (1) comparing the results of these surveillances, investigating the consistence of the 2 systems and (2) inquiring whether organizational differences among healthcare facilities significantly affected hand hygiene performances. Methods A retrospective analysis was performed on data collected annually from 2015 to 2018 for both surveillances from 40 hospitals of the region: HHSAF score (500 points maximum) and ABHR consumption in milliliters per patient-day (mL/PD) were considered. Logistic regression models were built to evaluate possible correlations between these variables, and observations were clustered considering both variables to identify whether groups with significant differences could be discerned. A tree-structured partitioning model was used to confirm the obtained results. Results A positive correlation was observed between HHSAF score and odds of belonging to the high ABHR consumption group, particularly for cutoffs set to 19 to 23 mL/PD (P = 0.033 for 23 mL/PD). Two ABHR consumption peaks were identified at approximately 10 and 22 mL/PD, corresponding to median HHSAF scores of 353.75 and 375 points, respectively. The group with better performances was mainly composed of hub hospitals (with single-hospital management). Conclusions The 2 surveillance systems are consistent, and the HHSAF score could work as a reasonable predictor of hand hygiene compliance in healthcare settings. Different management characteristics are crucial in creating a more/less favorable environment for hand hygiene compliance and infection prevention.

Background Italy is one of the largest consumers of broad-spectrum agents (BSAs) in Europe. This study evaluated surgical antimicrobial prophylaxis (SAP) compliance with the Italian national guidelines and its impact on surgical site infection (SSI) risk. Methods A prospective study was conducted in 42 hospitals participating in the national surveillance system for SSIs. SAP compliance was evaluated considering antibiotic choice, duration of administration, and timing of first dose. Trends in the consumption of 5 BSAs were also evaluated. Results Between 2012 and 2017, 24,861 surgical procedures were monitored. The risk ratios (RRs) for appropriate SAP increased by 22% each year, and significant increasing trends over time were found for overall compliance, timing, and duration. Adequate antibiotic choice and duration of administration were associated with a significantly reduced SSI risk (RR = 0.57; 95% confidence interval [CI], 0.5-0.65 vs RR = 0.51; 95% CI, 0.45-0.57, respectively), and overall compliance was associated with a RR of 0.65 (95% CI, 0.59-0.72). Conclusions These findings suggest that appropriate narrow-spectrum agents could be more effective than BSAs in preventing SSIs. Interventions to improve SAP compliance with guidelines could significantly contribute to reducing antimicrobial resistance by reducing SSIs and promoting more prudent use of antimicrobials.

Pseudomonas aeruginosa is an environmental bacterium, ubiquitous in aquatic habitats and water distribution systems, including dental unit waterlines (DUWLs). We investigated the prevalence of P. aeruginosa in DUWLs from private dental settings. We also analyzed the relationship between P. aeruginosa contamination and the presence of Legionella spp. and total viable count (TVC) in order to suggest a simple and inexpensive protocol to test the quality of water from DUWLs. We detected and quantified P. aeruginosa both by culture and by a PMA (propidium monoazide)-qPCR method. Overall, we detected P. aeruginosa in 17 samples using the PMA-qPCR and in 11 samples using the culture. All culture-positive samples were positive with the PMA-qPCR too, with an agreement between the two methods of 93% and a Cohen's kappa coefficient of κ = 0.747 (good concordance). Comparing results with results of our previous study, we noted that (a) P. aeruginosa was isolated only from DUWLs with high TVC and (b) five out of six Legionella-positive samples were negative for Pseudomonas spp. Our final suggestion is that the cleanliness of DUWLs should be assessed by TVC because it is a good indicator of the presence of pathogens such as Legionella spp. and P. aeruginosa.

Background Bundles have shown to improve patient outcomes in several settings. Surgical site infections (SSIs) following joint replacement surgery are associated with severe outcomes. We aimed to determine the effectiveness of non-pathogen specific bundled interventions in reducing SSIs after hip arthroplasty procedures. Materials and methods A systematic review and meta-analysis were conducted according to the PRISMA statement guidelines (PROSPERO registration number CRD42020203031). PubMed, Embase and Cochrane databases were searched for studies evaluating SSI prevention bundles in hip replacement surgery, excluding studies evaluating pathogen-specific bundles. Records were independently screened by two authors. The primary outcome was the SSI rate in intervention and control groups or before and after bundle implementation. Secondary outcomes of interest were bundle compliance and the number and type of bundle components. A meta-analysis was conducted using raw data, by calculating pooled relative risk (RR) SSI estimates to assess the impact of bundled interventions on SSI reduction. Results Eleven studies were included in the qualitative review and four studies comprising over 20 000 patients were included in the quantitative synthesis. All included studies found bundles were associated with reduced SSI rates. The pooled RR estimated from the fixed-effects model was 0.76 (95% confidence interval 0.61–0.96, p 0.022) with 49.8% heterogeneity. Conclusions Results support the effectiveness of non-pathogen specific bundled interventions in preventing SSIs following hip arthroplasty. A “core” group of evidence-based elements for bundle development were identified.

Pertussis (whooping cough) is a highly infectious disease caused by Bordetella pertussis. Mothers lacking adequate immunity and contracting the disease represent the biggest risk of transmission to new-borns, for which the disease is often a threat. The aim of the study was to estimate the frequency of pertussis susceptibility among pregnant women, in order to point out the need for a vaccine recall during pregnancy, and to evaluate the antibody response in already vaccinated women. A cross-sectional observational study was conducted in the blood test centre of "St. Anna" Obstetrics and Gynaecology Hospital in Turin (Piedmont, Italy). Eligibility criteria included pregnant women coming to the centre for any blood test, aged 18 or above and with gestational age between 33 and 37 weeks at the moment of the blood draw. The data collection was carried out from May 2019 to January 2020 and the concentration of anti-Pertussis Toxin (anti-PT) IgG was measured through the Enzyme-Linked Immunosorbent Assay (ELISA) technique. Two-hundred women (median age 35) were enrolled: 132 (66%) had received at least one dose of pertussis vaccine, 82 of which during pregnancy. Recently vaccinated women had significantly higher antibody titres (even 12-15 times as high) compared to those vaccinated more than 5 years before or never vaccinated at all (p < 0.0001). Moreover, 95.1% of recently vaccinated women had anti-PT IgG levels above 10 IU/ml, and 85.4% above 20 IU/ml, while the same proportions were as low as 37% and 21% (respectively) in the group of women not vaccinated in pregnancy. This study confirmed that the vaccination is greatly effective in ensuring high antibody titres in the first months after the booster vaccine, with considerable differences in anti-PT IgG compared to women vaccinated earlier or never vaccinated at all, and therefore vaccinating pregnant women against pertussis still represents a valuable strategy.

Quantification of antibiotic utilization is an essential component of antibiotic stewardship programs. In this multicentric study, we used different metrics to evaluate inpatient antibiotic use in children. The study objectives were to describe point prevalence of antibiotic use by indication and patient characteristics, to evaluate DOTs, LOTs and PDDs, and to compare PDDs to DDDs, which assume average maintenance dose per day in adults. All children hospitalized on the days of the study were included. Trained personnel collected demographic and clinical data from patients’ clinical records. We recorded information about antibiotics administered on the date of data collection, and in the previous 30 days of hospitalization. Of 810 patients, 380 (46.9%; CI 95%: 43.4–50.4) received one or more antibiotics; prevalence of use was 27.0% for prophylaxis (219/810), and 20.7% (168/810) for treatment. Overall, 587 drugs were issued to the 380 patients receiving antibiotics (1.5 antibiotic per patient). When considering treatments, DOT and LOT per 100 patient-days were 30.5 and 19.1, respectively, resulting in a DOT/LOT ratio of 1.6. PDDs increased with age and approached DDDs only in children aged ≥ 10 years; the ratio between PDDs estimated in children aged ≥ 10 years and in 0–11 month-old infants ranged from 2 for sulfamethoxazole and trimethoprim, to 25 for meropenem. Our results confirm that DOT, LOT and PDD are better alternatives to DDD in children.

Standard surgical antimicrobial prophylaxis (SAP) regimens are less effective in preventing surgical site infections (SSIs) due to rising antimicrobial resistance (AMR) rates, particularly for patients undergoing colorectal surgery. This study aimed to evaluate whether ertapenem should be a preferred strategy for the prevention of SSIs following elective colorectal surgery compared to three standard SAP regimens: amoxicillin-clavulanate, cefoxitin, and cefazolin plus metronidazole. A cost-effectiveness analysis was conducted using decision tree models. Probabilities of SSIs and AMR-SSIs, costs, and effects (in terms of quality-adjusted life-years) were considered in the assessment of the alternative strategies. Input parameters integrated real data from the Italian surveillance system for SSIs with data from the published literature. A sensitivity analysis was conducted to assess the potential impact of the decreasing efficacy of standard SAP regimens in preventing SSIs. According to our models, ertapenem was the most cost-effective strategy only when compared to amoxicillin-clavulanate, but it did not prove to be superior to cefoxitin and cefazolin plus metronidazole. The sensitivity analysis found ertapenem would be the most cost-effective strategy compared to these agents if their failure rate was more than doubled. The findings of this study suggest ertapenem should not be a preferred strategy for SAP in elective colorectal surgery.

Summary Background Healthcare-associated infections (HAIs) are an increasing public health threat. Measuring disease burden in disability-adjusted life-years (DALYs) allows the combination of morbidity and mortality into one figure, as it represents the summation of years lived with disability and years of life lost. Aim To evaluate the incidence, attributable deaths and burden of the most significant HAIs in Italy. Methods Prevalence data from the study sample of the 2016 national Point Prevalence Survey of HAIs in acute-care settings were used to estimate the incidence of five HAIs. The methodology from the Burden of Communicable Diseases in Europe (BCoDE)-project was employed for DALY calculations, adapting the disease models to the Italian population. Findings We estimated a total of 641,065 (95% uncertainty interval, UI 585,543.00–699,207.90) new yearly cases of HAIs and 29,375 (95% UI 23,705.97–35,905.80) deaths in Italy in 2016. The total annual DALYs were estimated to be 424,657.45 (95% UI 346,240.35–513,357.28), corresponding to 702.53 DALYs (95% UI 575.22–844.66) per 100,000 general population. Bloodstream infections accounted for the majority of total DALYs (59%), healthcare-associated pneumonia for 29%, surgical site infections for 9%, CDI for 2% and urinary tract infections accounted for less than 1% of total DALYs. Conclusion Results of this study suggest HAIs have a substantial burden in Italy. Reducing the burden of HAIs through infection prevention and control efforts is an achievable goal. This study provides data that could be used to guide policy-makers in the implementation of these measures.

BackgroundThis study illustrates for the first time the performance (sensitivity and selectivity) of the selective medium BCYEα +AB suggested by the new edition of ISO 11731 for legionella isolation and enumeration. We compared the efficacy of the selective BCYEα +AB medium with that of the highly selective MWY medium.ResultsLegionellaspp.was detected in 48.2 and 47.1% of the samples by BCYEα +AB and MWY agar, respectively. For optimal detection ofLegionellaspp., most protocols recommend using selective media to reduce the number of non-Legionellabacteria. Agreement between the two media was 86.7%.ConclusionsAccording to the results, both media have a very similar performance and they both have advantages and disadvantages over each other. In AB medium there is the risk of being less selective so more interfering microbiota may grow but in MWY medium there is the risk of being too selective. The low selectivity of the AB medium could be resolved if other treatments are applied after filtration, e.g. acid and/or heat treatment, but it must be taken into account that these treatments still reduce the number of viableLegionella. In conclusion, we recommend using MWY as a selective medium for the detection ofLegionellaspp. as it is easier discern suspected colonies and facilitate the finalLegionellaspp. count.

Background: Evidence to date indicates that heater&ndash, cooler units (HCUs) and heater units (HUs) can generate potentially infectious aerosols containing a range of opportunistic pathogens such as Mycobacterium chimaera, other non-tuberculous mycobacterial (NTM) species, Pseudomonas aeruginosa and Legionella spp. Our purpose was to determine the extent of Legionella contamination and total viable count (TVC) in HCUs and HUs and to analyze the relationship by water system design of devices of two different brands (LivaNova vs. Maquet). Methods: Legionella spp. were detected and quantified by our optimized PMA-qPCR protocol, TVCs were assessed according to ISO protocol 6222. Analyses were performed in the first sampling round and after six months of surveillance. Results: Overall, Legionella spp. was detected in 65.7% of devices. In the second sampling round, Legionella positivity rates were significantly lower in water samples from the Maquet devices compared to the LivaNova ones (27.3% vs. 61.5%). LivaNova HCUs also yielded more Legionella, and aquatic bacteria counts than Maquet in both first and second-round samples. Conclusions: We recommend that all surgical patients and staff exposed to aerosols from thermoregulatory devices should be followed up for Legionella infection and that microbiological surveillance on such devices should be conducted regularly as precautionary principle.

Background Surgical site infections (SSIs) are monitored in Italy through a national surveillance system. A 4-element bundle was introduced in 2012, consisting of: appropriate preoperative shower and hair removal, perioperative normothermia, and antibiotic prophylaxis. The aim of this study was to evaluate the effect of the intervention on SSI rates after colon surgery. Methods A retrospective cohort study was conducted between 2008 and 2019 in 29 hospitals of northern Italy. An interrupted time series analysis (ITSA) was modeled to assess the bundle's impact on SSI trends. Logistic regression was performed to identify predictors of SSI among procedures performed in the postintervention period, comparing full and partial bundle compliance. Results Data of 5487 colon surgery procedures were collected (1243 preintervention and 4244 postintervention). The ITSA identified a significant change in the monthly postintervention SSI trend of −0.19% and a change in level of −2.09%. A significant protective effect of full bundle compliance compared to partial bundle compliance (OR 0.74, P.043) was found, whereas the single effect of the bundle elements was nonsignificant. Conclusions Results of this study suggest this relatively simple bundle protocol is effective in reducing SSI risk.

Background Hand hygiene represents one of the most effective measures to prevent infection transmission in healthcare facilities and may reduce healthcare-associated infections by up to 15-30%. In Piedmont (a region in North-West Italy), hand hygiene compliance is routinely monitored through the WHO Hand Hygiene Self-Assessment Framework (HHSAF) and each hospital is also required to provide data about alcohol-based hand rub (ABHR) consumption as part of the regional performance indicator surveillance system. The aim of this study is to assess whether these two systems yield consistent results, i.e. whether numerical data matches the self-reported status of hand hygiene compliance. Methods For the years 2015-2018, data on ABHR consumption (in millilitres per patient-day, ml/PD) were collected annually at a facility level (40 hospitals) and then aggregated according to the corresponding local health unit/hospital unit, whereas the HHSAF scores were collected at a health/hospital unit level (18 units). The analysis was performed through logistic regression, by taking the WHO HHSAF score (continuous variable) as predictor and ABHR consumption as response variable, dichotomously considered as “low” or “high” (respectively below or above the 20 ml/PD threshold commonly accepted for good practice in hand hygiene). Results This study found that a high level of ABHR consumption is more likely to be observed in hospitals/health units with higher HHSAF scores, with a 1.14-fold increase in the odds for every 10-point increase in the HHSAF score. Despite the limited number of observations due to data aggregation, the result reached borderline statistical significance (p = 0.05). Conclusions The ABHR consumption surveillance provides feedback heading in the same direction as the results of the HHSAF, therefore the two surveillance systems are consistent. These findings provide further support for the validity of the HHSAF score as a reasonable predictor of hand hygiene compliance. Key messages The WHO Hand Hygiene Self-Assessment Framework score is a reliable predictor of hand hygiene compliance, as a high hand rub consumption is more likely to occur in hospitals with higher HHSAF score. Surveillance through the WHO HHSAF should be encouraged, along with alcohol-based hand rub (ABHR) measurement, and these results should be used to guide action plans to promote hand hygiene.

Background Healthcare-Associated Infections (HAIs) significantly increase adverse clinical outcomes and healthcare costs. In 2016 Italy participated in the second European Centre for Disease Prevention and Control (ECDC) Point Prevalence Survey (PPS) of HAIs and antimicrobial use in acute care hospitals. The aim of this study was to estimate the burden of the 5 most common HAIs in Italy, by evaluating incidence, attributable deaths, Years of Life Lost (YLL), Years Lived with Disability (YLD) and Disability-Adjusted Life-Years (DALYs). Methods National PPS data were used to establish sex- and age-specific incidence of Healthcare-associated Pneumonia (HAP), HA Urinary tract infections (HA UTI), HA Bloodstream Infections (HA BSI) excluding neonatal BSI, Surgical Site Infections (SSI), HA Clostridium Difficile infections (HA CDI). Patients' life expectancy was adjusted according to the severity of underlying conditions using the McCabe score. Following the methodology from the Burden of Communicable Diseases in Europe (BCoDE)-project, an adapted version of the disease models of the BCoDE toolkit was used. Results An overall yearly incidence of 643434 new cases of HAI in Italy was estimated. The aggregate burden of the 5 HAIs was 426411.98 DALYs (86731.03 YLD + 339680.96 YLL), corresponding to 702.53 DALYs per 100000 total population. HA BSI and HAP had the highest burden with respectively 253868.22? and 126038.26 DALYs. The population strata with the highest burden were the ones with McCabe Score 1 for every considered HAI. The age groups with the highest burden were 70-74 for male and 45-49 for female patients. In total, 56% of DALYs were attributable to men and 44% to women. Conclusions This nation-wide study found a significant burden of disease due to HAIs in Italy. Results of this study could be used to guide policy-makers in the implementation of measures aiming to reduce the impact of HAIs. Key messages This study estimated the burden of 5 HAIs in Italy was 426411.98 DALYs (86731.03 YLD + 339680.96 YLL according to 2016 PPS data. Considering the significant burden of HAIs found in this study, infection prevention and control measures should be a Public Health priority in Italy.

Background The Oncology Network of Piedmont and Aosta Valley (North-West Italy) was started in 2000 and fully established in 2010 as a regional organisational model offering multidisciplinary care by experienced reference centres for cancer diagnosis and surgical treatment. In particular, the San Giovanni Bosco Hospital in Turin is the regional reference centre for pancreatic cancer since 2015 (50-70 oncologic surgery operations performed annually). The aim of study is to assess the effectiveness of this model for pancreatic cancer surgery by comparing survival outcomes before and after the adoption of the Oncology Network model. Methods The study included 178 patients, aged 37-84, who underwent duodenocephalo- or total pancreatectomy for ductal cancer in the years 2007-2019. Clinical data were retrieved from surgical records, whereas the vital status was ascertained through an application connected to the Regional Registry Office. The Kaplan-Meier method was used to estimate survival and the log-rank test was then used to compare survival rates between the two groups (before vs. after 2015). Cox's regression was employed to assess the difference between the groups, also adjusting for age, sex and ASA score. Results The median survival for included patients was 19 months. No significant differences were found between patients of the two groups (before vs. after 2015), neither considering all patients (p = 0.4) nor for any single ASA or age category (p-values ranging from 0.1 to 0.6). The multivariate Cox model accounting for ASA, age and sex confirmed absence of significant survival differences between the two groups. Conclusions Despite increased case complexity, due to the extension of surgery indication to more critical patients, the Oncology Network model allowed achieving an overall survival in pancreatic cancer surgery that is consistent with international literature and not inferior to survival outcomes previously reached in patients more strictly selected. Key messages This study found survival after pancreatic cancer surgery was similar before and after the center entered an Oncological Network, which led to include patients with an increased severity in case-mix. Promoting the implementation of Oncology Networks should be a public health priority as it allows to improve health outcomes and quality of care.

Background The efficacy of standard surgical antimicrobial prophylaxis (SAP) regimens in preventing surgical site infections (SSIs) after colorectal surgery is declining, along with rising rates of intestinal colonization with antimicrobial resistant (AMR) Enterobacteriaceae and Bacteroides spp. Ertapenem has been approved by the FDA and EMA for SAP in this context, however it has not been used extensively for this indication out of concern for increasing carbapenem-resistance rates. A limited number of studies have investigated the efficacy of ertapenem in preventing SSIs after colorectal surgery, comparing ertapenem with different agents or combinations of agents. Methods A systematic review was conducted following the PRISMA checklist. PubMed, Embase and Cochrane databases were searched for studies measuring the efficacy of ertapenem in preventing SSIs following elective colorectal procedures. Studies were considered eligible if they reported extractable data on the proportion of SSIs and/or on the proportion of AMR pathogens isolated from SSIs. Data from all ertapenem study arms were extracted. A random effects meta-analysis was performed to estimate the overall proportion of SSI. Results Of 1109 identified studies, 5 met the inclusion criteria and were included in the meta-analysis, totalling 3176 participants. The pooled proportion of SSI was 0.10 (95% CI 0.05-0.18; I2=96%; τ2=0.6323; p ≤ 0.01). Only one study reported data on carbapenem resistance: out of 124 isolates from 30 patients, 1 gram negative carbapenem-resistant isolate was identified. Conclusions The pooled proportion of SSI using ertapenem as SAP found in this study is in line with the proportion of SSI using standard SAP found by a recent meta-analysis (Gandra, 2019). According to this analysis, the benefit of ertapenem does not outweigh the risk of further promoting AMR, although results should be interpreted with caution due to the high heterogeneity among included studies. Key messages According to this study, the efficacy of ertapenem in preventing surgical site infections after elective colorectal surgery is comparable to the efficacy of standard surgical antibiotic prophylaxis. The emergence of carbapenem resistance after surgical prophylaxis with ertapenem should be further investigated through longer term studies before widespread use for this indication.