ABSTRACT
To study the main enteropathogens causing diarrhea in the region of Ribeirão Preto regarding serogroups and serotypes, the feces of 1836 children under 10 years old, from both sexes, attack of acute gastroenteritis, were analysed during a period of 4 years in Adolfo Lutz Institute - Ribeirão Preto, SP. The pathogens identified by standard methods were the following: Escherichia coli, Salmonella spp., Shigella spp., Campylobacter spp., Yersinia spp., and Cryptosporidium spp. Positive samples were 22.8% (419) with 1.7% association of pathogens. Larger isolates were mainly from children 0 to 11 months old. Enteropathogenic E. coli (EPEC) was most frequent (8.7%) with predominance of serogroup O119 (40.2%), followed by Shigella (6.2%), 63.6% of which S. sonnei.
Subject(s)
Diarrhea/microbiology , Enterobacteriaceae/isolation & purification , Acute Disease , Age Distribution , Brazil/epidemiology , Campylobacter/isolation & purification , Child , Child, Preschool , Diarrhea/epidemiology , Feces/microbiology , Female , Humans , Infant , Infant, Newborn , MaleABSTRACT
In the study of conjunctivitis outbreaks occurring from September 1994 to September 1996 in the region of Ribeirão Preto, conjunctival exudates of 92 patients were cultivated in Instituto Adolfo Lutz Laboratory I, Ribeirão Preto. Most cases occurred in the age range 2-7 years. The etiological agents which were most frequently isolated from the analyzed cases were: Streptococcus pneumoniae and Haemophilus influenzae, in 40.22% and 21.74%, respectively. 51.35% of the S. pneumoniae isolated strains were not typable. The oxacillin-resistant S. pneumoniae strains were submitted to the minimum inhibitory concentration test (MIC) and three of them presented intermediate resistance, whereas only one was highly resistant to penicillin.
Subject(s)
Conjunctivitis, Bacterial/epidemiology , Conjunctivitis, Bacterial/microbiology , Disease Outbreaks , Haemophilus Infections/epidemiology , Haemophilus Infections/microbiology , Haemophilus influenzae/isolation & purification , Pneumococcal Infections/epidemiology , Pneumococcal Infections/microbiology , Adolescent , Adult , Brazil , Child , Child, Preschool , Haemophilus influenzae/drug effects , Humans , Infant , Infant, Newborn , Microbial Sensitivity Tests , Middle Aged , Penicillins/pharmacology , Streptococcus pneumoniae/drug effectsABSTRACT
Among S. typhimurium and S. agona strains isolated during the period from 1971 to 1987, the biotypes, colicine types and resistance patterns were determined for 734 S. typhimurium and 631 S. agona strains. Among 734 S. typhimurium strains 65 biotypes were disclosed with prevalence of biotypes 1a (28.34%), 1b (29.84%) and 9 bi (18.28). Concerning S. agona, the biotype 1a represented by 87.16%, was the commonest clone among our strains. Although colicine typing added little information to characterize these serotypes, it should be usefull when applied in epidemiological study of outbreaks. It was observed multiply antimicrobial resistance mainly among human strains, particularly from nosocomial origins.
