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Objectives: Patients with cancer are at higher risk for severe COVID-19 infection. COVID-19 surveillance of workers in oncological centres is crucial to assess infection burden and prevent transmission. We estimate the SARS-CoV-2 seroprevalence among healthcare workers (HCWs) of a comprehensive cancer centre in Catalonia, Spain, and analyse its association with sociodemographic characteristics, exposure factors and behaviours., Design: Cross-sectional study (21 May 2020-26 June 2020)., Setting: A comprehensive cancer centre (Institut Català d'Oncologia) in Catalonia, Spain., Participants: All HCWs (N = 1969) were invited to complete an online self-administered epidemiological survey and provide a blood sample for SARS-CoV-2 antibodies detection., Primary Outcome Measure: Prevalence (%) and 95% CIs of seropositivity together with adjusted prevalence ratios (aPR) and 95% CI were estimated., Results: A total of 1266 HCWs filled the survey (participation rate: 64.0%) and 1238 underwent serological testing (97.8%). The median age was 43.7 years (p25-p75: 34.8-51.0 years), 76.0% were female, 52.0% were nursing or medical staff and 79.0% worked on-site during the pandemic period. SARS-CoV-2 seroprevalence was 8.9% (95% CI 7.44% to 10.63%), with no differences by age and sex. No significant differences in terms of seroprevalence were observed between onsite workers and teleworkers. Seropositivity was associated with living with a person with COVID-19 (aPR 3.86, 95% CI 2.49 to 5.98). Among on-site workers, seropositive participants were twofold more likely to be nursing or medical staff. Nursing and medical staff working in a COVID-19 area showed a higher seroprevalence than other staff (aPR 2.45, 95% CI 1.08 to 5.52)., Conclusions: At the end of the first wave of the pandemic in Spain, SARS-CoV-2 seroprevalence among Institut Català d'Oncologia HCW was lower than the reported in other Spanish hospitals. The main risk factors were sharing household with infected people and contact with COVID-19 patients and colleagues. Strengthening preventive measures and health education among HCW is fundamental., Competing Interests: Competing interests: JJ received research funding from Kyowa Kirin and from Angelini Pharma for congress attendance. The Cancer Epidemiology Research Programme has received grants from Merck & Co., Roche, GSK, IDT, Hologic and Seegene., (© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY. Published by BMJ.)

Objective: In Catalonia, the variety of the provision of Primary Healthcare has sparked intense debates over the last 20 years regarding the efficiency of the various management models. Our study analyzed the differences in the three existing management models of primary healthcare in Catalonia (the Catalan Health Institute, public consortiums and associative base entities)., Methods: The primary data were obtained from the reports of the Results Center of The Observatory of the Health System of Catalonia. Representative indicators were selected and compared with the Kruskall-Wallis test. They were later adjusted for confounding factors., Results: There were differences in the average number of visits per population attended, the percentage of the population attended in the subgroup of population over 75 years of age, the percentage of patients over 74 years with more than twelve appointments, the rate of potentially avoidable hospitalizations (total and in the subgroup of patients with chronic obstructive pulmonary disease (COPD)), polypharmacy, the use of lipid-lowering drugs and the detection of prostate-specific antigen (PSA). When adjusting for confounding variables, the differences disappeared in all of them except for the indicator on the detection of PSA., Conclusions: The differences favoured mainly the associative base entities disappear when they are corrected for confounding variables. The legal status of each provider does not significantly influence the health outcomes.