Of the Klebsiella sp. isolates, 54.9% were resistant to third-generation cephalosporins. Of the Acinetobacter spp. and Pseudomonas aeruginosa isolates, 55.9% and 36.8%, respectively, were resistant to imipenem. In our multicenter study, we found high crude mortality and a high proportion of nBSIs due to antibiotic-resistant organisms.

This cross-sectional survey assessed physicians' perceptions, knowledge and practices concerning antimicrobial resistance. Ninety-nine percent of participants reported that they perceived antimicrobial resistance as an important problem, and 86.7% agreed that antimicrobials are overprescribed, but only 2.9% rated "practicing antimicrobial control" as the most important strategy for preventing resistance. The results of this study warrant educational programs on antimicrobial resistance and the distribution of information regarding local antimicrobial susceptibility testing.

BackgroundNosocomial bloodstream infections (nBSIs) are an important cause of morbidity and mortality and are the most frequent type of nosocomial infection in pediatric patients.MethodsWe identified the predominant pathogens and antimicrobial susceptibilities of nosocomial bloodstream isolates in pediatric patients (≤16 years of age) in the Brazilian Prospective Surveillance for nBSIs at 16 hospitals from 12 June 2007 to 31 March 2010 (Br SCOPE project).ResultsIn our study a total of 2,563 cases of nBSI were reported by hospitals participating in the Br SCOPE project. Among these, 342 clinically significant episodes of BSI were identified in pediatric patients (≤16 years of age). Ninety-six percent of BSIs were monomicrobial. Gram-negative organisms caused 49.0% of these BSIs, Gram-positive organisms caused 42.6%, and fungi caused 8.4%. The most common pathogens were Coagulase-negative staphylococci (CoNS) (21.3%), Klebsiella spp. (15.7%), Staphylococcus aureus (10.6%), and Acinetobacter spp. (9.2%). The crude mortality was 21.6% (74 of 342). Forty-five percent of nBSIs occurred in a pediatric or neonatal intensive-care unit (ICU). The most frequent underlying conditions were malignancy, in 95 patients (27.8%). Among the potential factors predisposing patients to BSI, central venous catheters were the most frequent (66.4%). Methicillin resistance was detected in 37 S. aureus isolates (27.1%). Of the Klebsiella spp. isolates, 43.2% were resistant to ceftriaxone. Of the Acinetobacter spp. and Pseudomonas aeruginosa isolates, 42.9% and 21.4%, respectively, were resistant to imipenem.ConclusionsIn our multicenter study, we found a high mortality and a large proportion of gram-negative bacilli with elevated levels of resistance in pediatric patients.

Antimicrobial resistance is higher, particularly among gram-negative bacteria in the transplant population, although the overall mortality rate between transplant and non-transplant patients with nosocomial BSI is similar.

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Background This study aimed to analyse the impact that web-based distance learning has on knowledge gain in medical students, as well as student perceptions of the methodology. Methods This was an educational intervention study conducted at a tertiary teaching hospital in the city of São Paulo, Brazil. From 2008 to 2014, we offered a free web-based distance learning course, covering antimicrobial use and microbial resistance, to fifth-year medical students. The course encompassed 100 h of activities, with five theoretical modules, exercises and simulations, within a virtual learning environment. The students were tutored in their online activities, and some classes were conducted in real time for live discussions. In addition, students underwent face-to-face assessments of their knowledge of the topic before and after the course. Statistical analysis was performed and the means of the overall scores were obtained, as were the respective 95% confidence intervals (CIs). The means were compared by two-tailed paired t -tests and by the paired Wilcoxon test. Results Of 814 eligible medical students, 606 (74.45%) completed the entire course during the study period. The mean score for knowledge of the topic was significantly higher on the final assessment than on the initial assessment ( p <  0.001). We found that dedication (in hours) was directly proportional to the level of participation, as reflected in the mean final score ( p = 0.009) and in the proportion of students who passed ( p = 0.028). All of the participants considered their knowledge adequate or insufficient before the course, stating that it is quite important or important to address the topic during medical education. Although dedication levels were low, 70.5% stated that they had learned “quite a lot” or “more than expected” about the topic and would dedicate more time to it if they could. Conclusions The use of a virtual learning environment can promote teaching and learning in the infectious diseases field, specifically for antimicrobial stewardship, increasing knowledge significantly, and should be considered for inclusion in the final stages of medical education.

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