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Background The epidemiology of antibiotic-resistant Enterobacteriaceae intestinal carriage in healthy US children has not been well characterized. Methods Children between 14 days and 14 years of age were enrolled during well-child visits in Oakland, California, Kansas City, Kansas, and Nashville, Tennessee, between December 2013 and March 2015. Data on recent antibiotic use by the child and travel and hospitalization history of all members of each child’s household were obtained with a risk-factor survey. Stool specimens collected from the subjects were screened for extended-spectrum β-lactamase-producing (ESBL-P) bacteria using CHROMagar ESBL medium. Putative ESBL-P Escherichia coli and Klebsiella colonies underwent phenotypic confirmation by double-disk synergy testing; confirmed third-generation cephalosporin-resistant (3GCR) isolates underwent additional antibiotic-susceptibility testing. Results In 519 subjects, the overall 3GCR Enterobacteriaceae carriage rate was 4.4% (n = 23) and ranged from 3.4% to 5.1% among the study sites. The ESBL-P Enterobacteriaceae carriage rate was 3.5% (n = 18). The rates of 3GCR Enterobacteriaceae carriage was highest in 1 to <2 year olds at 6.5%, and was 5.2% in <5 year-olds vs 1.7% in ≥5-year-olds (P =.11). 3GCR and ESBL-P Enterobacteriaceae carriage was associated with international travel within the previous year; 11.1% of ESBL-P Enterobacteriaceae carriers reported this history compared with 1.6% of noncarriers (P =.004). No other queried factor was found to increase risk. Of the 24 analyzed 3GCR isolates, 58% were multidrug resistant. Conclusions The 3GCR Enterobacteriaceae carriage rate exceeds 5% in healthy US children <5 years of age. International travel within the previous year increased the risk of 3GCR and ESBL-P Enterobacteriaceae carriage. In contrast, we found no differences in the rates of hospitalization or recent antibiotic exposure between carriers and noncarriers. Young children, who have the highest prevalence of colonization, might be a sentinel population to study to gain a better understanding of community sources of antibiotic-resistant Enterobacteriaceae. [ABSTRACT FROM AUTHOR]

OBJECTIVE. We assessed the incidence of rotavirus disease requiring an emergency department visit among children <5 years of age. METHODS. We conducted active surveillance for acute gastroenteritis in pediatric emergency departments in Cincinnati, Ohio, and Oakland, California, from March 1999 to May 2000, among children 2 weeks to 59 months of age with acute diarrhea and/or vomiting. We obtained clinical and demographic information from participants and tested their stool specimens for rotavirus. RESULTS. Approximately 9% of all emergency department visits at the study sites were attributable to acute gastroenteritis. A total of 1433 children were eligible at the 2 sites; 85% were enrolled and 68% provided a stool specimen. Overall, rotavirus was detected in specimens from 27% of children (30% in Cincinnati and 24% in Oakland). Rotavirus detection was higher in bulk stools, compared with rectal swabs, at both Cincinnati (37% vs 23%) and Oakland (46% vs 18%). Patients with rotavirus had more-severe disease than did those with nonrotavirus gastroenteritis. We estimated that the mean annual incidence of emergency department visits attributable to rotavirus was 12 cases per 1000 children in Cincinnati and 15 cases per 1000 children in Oakland. Through extrapolation, we estimated that rotavirus infection causes ~260 910 emergency department visits per year among US children. CONCLUSION, Active surveillance demonstrated that the burden of laboratory-confirmed rotavirus disease treated in emergency department settings among US children is substantial and greater than estimated previously. [ABSTRACT FROM AUTHOR]

Background: Although rotaviruses (RVs) are the most common cause of severe gastroenteritis in children, there is a lack of information detailing the spectrum of clinical manifestations of RV disease resulting in hospitalization., Objective: To characterize the clinical spectrum of RV-associated hospitalizations, including short stay visits in children., Methods: Active RV disease surveillance was conducted at three children's hospitals Sundays through Thursdays in children 15 days through 4 years of age admitted with diarrhea (D), vomiting (V) and/or unexplained fever (F) between November, 1997, and June, 1998. Stool specimens were collected and tested for RV by enzyme immunoassay., Results: Of the 862 children enrolled, 763 (88%) had a stool specimen tested for RV. Overall 31% of children excreted RV. RV excretion was highest when all 3 symptoms (D, V and F) occurred in the same child (56%), lower when 2 symptoms occurred together (38% DV; 19% DF; 13% VF) and lowest when each symptom occurred alone (3% D; 11% V; 6% F). Nine percent of the children without diarrhea excreted RV. Children admitted without diarrhea were more likely to have rotavirus if they developed diarrhea during their hospitalization., Conclusions: RV detection was greatest when diarrhea, vomiting and fever occurred together and lowest when each symptom occurred alone. The spectrum of symptoms of rotavirus disease in children at the time of admission to the hospital or short stay unit may be broader than previously recognized.