| isolation of salmonella and pseudomonas aeruginosa from seawater with different levels of pollution in rio de janeiro. | | 1979 | 122385 |
| [microbial resistance of salmonella agona from various regions of brazil]. | the object of the investigation was the evaluation of the susceptibility to antibiotic and chemotherapeutic agents of 240 strains of salmonella agona isolated from different sources (human, food and environment) obtained from five brazilian states (minas gerais, são paulo, rio de janeiro, pernambuco and rio grande do sul). the presence of r factors in 26 representative strains of the sample was also determined. | 1986 | 3796280 |
| [incidence of salmonella serotypes in the city of rio de janeiro]. | | 1974 | 4619153 |
| drug resistance in salmonella strains isolated from raw sewage in rio de janeiro. | | 1982 | 7182862 |
| aetiology of acute diarrhoea in hospitalized children in rio de janeiro city, brazil. | enteropathogens were investigated in 406 children aged 0-3 years with diarrhoea attending the salles neto municipal hospital. enteric bacterial pathogens were isolated from 49 per cent of the children. enterotoxigenic escherichia coli (etec) (20.9 per cent), enteropathogenic e. coli (epec) (16.5 per cent), rotavirus (11.6 per cent), and campylobacter (9.9 per cent) were the most common agents. among clinical features, vomiting and fever were significantly associated with rotavirus isolation (50. ... | 1993 | 8133560 |
| lysotypes and plasmidial profile of salmonella serovar typhimurium isolated from children with enteric processes in the cities of rio de janeiro, rj, and salvador, ba - brazil. | the lysotypes, plasmidial profiles, and profiles of resistance to antimicrobial agents were determined in 111 salmonella typhimurium strains isolated from feces and blood of children treated in rio de janeiro and in salvador. six distinct lysotypes (19, 41, 97, 105, 120 and 193) were recognized, with a predominance of lysotype 193 (59.7%) in rio de janeiro and of phage type 105 (38.4) in salvador. approximately 86.7% of the lysotype 193 strains presented multiple resistance to more than six anti ... | 1995 | 8599057 |
| [salmonella in lymph nodes of apparently normal swines slaughtered in the santa cruz slaughterhouse, rio de janeiro city, guanabara]. | | 1974 | 4478929 |
| [genetic analysis of lactose-fermenting salmonella typhimurium isolated in rio de janeiro]. | lactose fermenting salmonella typhimurium are endemic in são paulo, but not in rio de janeiro two isolations are described from the latter city. these rio de janeiro strains have a plasmid of 7.4 megadaltons. these plasmids were not auto-transferable, were thermostable and were not eliminated by acridine orange. one of these strains arose from a plasmid that had the lactose operon repressed, leading us to speculate about the evolution of the lactose fermenting character in brazilian salmonella. | 1989 | 2700499 |
| comparative study of the mutagenic and genotoxic activity associated with inhalable particulate matter in rio de janeiro air. | we have determined the genotoxic and mutagenic activities associated with inhalable particulate matter (ipm) collected in rio de janeiro, brazil, camden, nj, and caldecott tunnel, ca, and used these results to compare three different bioassays. samples collected every 12 hr (rio) or every 24 hr (camden) were extracted sequentially with cyclohexane (cx), dichloromethane (dcm), and acetone (ace), for a rough fractionation by polarity, and composites of the extracts were tested for mutagenicity usi ... | 1990 | 2137085 |
| pasteurized milk: efficiency of pasteurization and its microbiological conditions in brazil. | this study aimed to verify the pasteurization efficiency and the microbiological quality of milk sold in the city of rio de janeiro, brazil. the microbial quality of pasteurized milk samples was assessed by sample testing for the presence of salmonella spp., coliforms at 35 degrees c, coliforms at 45 degrees c, and mesophilic bacterial counts. in addition, the pasteurization efficiency was verified through tests of neutral phosphatase and peroxidase enzymes. salmonella spp. were not detected in ... | 2010 | 19785537 |
| relationships between fecal indicators and pathogenic microorganisms in a tropical lagoon in rio de janeiro, brazil. | rodrigo de freitas lagoon is an urban ecosystem undergoing accelerated degradation, therefore selected as a model for microbiological quality studies of tropical lagoons. the aim of this study was to evaluate the abundance and the spatial distribution of fecal pollution indicators and pathogenic microorganisms in the lagoon. the relationships between microbial groups and abiotic measurements were also determined to evaluate the influence of environmental conditions on bacterial distribution and ... | 2010 | 19365609 |
| clonality and antimicrobial resistance gene profiles of multidrug- resistant salmonella enterica serovar infantis isolates from four public hospitals in rio de janeiro, brazil. | in brazil, salmonella enterica serovar infantis resistant to various antimicrobials, including cephalosporins, has been identified as an etiological agent of severe gastroenteritis in hospitalized children since 1994. in this study, 35 serovar infantis strains, isolated from children admitted to four different rio de janeiro, brazil, hospitals between 1996 and 2001, were characterized by pulsed-field gel electrophoresis (pfge) and antimicrobial susceptibility testing in order to determine their ... | 2006 | 16891490 |
| characterization of a salmonella enterica serovar agona strain harbouring a class 1 integron containing novel oxa-type beta-lactamase (blaoxa-53) and 6'-n-aminoglycoside acetyltransferase genes [aac(6')-i30]. | to characterize by molecular methods a multidrug-resistant salmonella enterica serovar agona (s. enterica agona) isolated from a hospitalized patient in rio de janeiro, brazil. | 2004 | 15231768 |
| epidemiological analysis of bacterial strains involved in hospital infection in a university hospital from brazil. | hospital infections cause an increase in morbidity and mortality of hospitalized patients with significant rise in hospital costs. the aim of this work was an epidemiological analysis of hospital infection cases occurred in a public university hospital in rio de janeiro. hence, 238 strains were isolated from 14 different clinical materials of 166 patients hospitalized in the period between august 1995 and july 1997. the average age of the patients was 33.4 years, 72.9% used antimicrobials before ... | 2000 | 10968883 |
| a salmonella agona outbreak in a pediatric hospital in the city of rio de janeiro, brazil. | six salmonella agona strains from an outbreak of 15 days duration which occurred in a public hospital in rio de janeiro, brazil, were analyzed. the outbreak involved six infants (mean age, 24 days; mean body weight, 1612 g), all of them with severe clinical signs and symptoms. two of them had surgical implications, two were preterm and two had respiratory distress at birth. the salmonella strains were resistant to nine antimicrobial agents (ampicillin, cefalotine, ceftriaxone, gentamicin, amikac ... | 1994 | 7823804 |
| identification of multiple-resistance (r) and colicinogeny (col) plasmids in an epidemic salmonella agona serotype in rio de janeiro. | a salmonella agona strain has caused a hospital outbreak of gastroenteritis in a pediatric unit in rio de janeiro. it bears two plasmids, a small (6.5 mda molecular weight) plasmid coding for type b colicin production and a larger one (36 mda molecular weight) determining resistance to ampicillin, gentamicin, kanamycin and trimethoprim-sulphamethoxazole. the r-plasmid, but not the col-plasmid, is self-transferable to a escherichia coli recipient strain. curing for the r-plasmid was achieved by t ... | 1984 | 6747288 |