Salmonella Serotypes Isolated from Nonhuman Sources in São Paulo, Brazil, from 1996 through 2000

Abstract

A total of 4,581 Salmonella strains isolated from nonhuman sources, including foodstuffs associated with foodborne Salmonella outbreaks, from January 1996 through December 2000 were serotyped at the Enteropathogens Laboratory, Instituto Adolfo Lutz, São Paulo, Brazil. Among the 123 different serotypes identified, Salmonella enterica subsp. enterica serotype Enteritidis (Salmonella Enteritidis) was the most prevalent (32.7%), ranking first for almost every kind of source. The next most common serotypes were Salmonella Senftenberg (10.3%), Salmonella Hadar (6.8%), Salmonella Agona (5.1%), and Salmonella Typhimurium (2.4%). Rough strains belonging to the subspecies S. enterica subsp. enterica (4.8%), S. enterica subsp. arizonae (<1%), S. enterica subsp. diarizonae (<1%), and S. enterica subsp. houtenae (<1%) were also detected. Foodstuffs (including poultry meat for consumption) contained 38.1% of the studied Salmonella strains, poultry flocks (from several farms under salmonellosis control by the owners) contained 21.7%, the environment contained 10.6%, sewage contained 9.4%, water contained 6.6%, animal feed contained 4.4%, chill water from poultry-processing operations contained 2.2%, and other sources contained 7.0%. Foodstuffs extensively contaminated with Salmonella strains were poultry meat (40%), cow meat (11%), desserts (8%), mayonnaise (6%), sausage (5%), and unpasteurized shell eggs (4%), and there were several other food sources (26%). Homemade mayonnaise was the most common vehicle for Salmonella foodborne outbreaks, and Salmonella Enteritidis was the serotype most isolated (95%) from that source. According to these data and previously published data concerning Salmonella strains isolated in São Paulo State, almost the same serotypes have predominated among nonhuman sources for the last decade.

Prévalence de la contamination parSalmonellades élevages de poulet de chair au Maroc

“…Au Maroc, aucune étude relative à la prévalence de Salmonella dans les élevages n'a encore été publiée. Dans les pays en développement, les rares études disponibles révèlent 100 % d'infection en Thaïlande (Sasipreeyajan et al, 1996), 28,6 % au Sénégal (Cardinale et al, 2004) et 21,7 % au Brésil (Tavechio et al, 2002). Dans les pays développés, la prévalence de Salmonella dans les élevages de poulet de chair varie d'un pays à l'autre : 76,9 % au Canada (Chambers et al, 1998) ; 69,8 % en France (Rose et al, 1999) ; 41,3 % en Turquie (Carli et al, 2001) ; 25 % au Danemark (Chadfield et al, 2001) ; 0,7 % en Finlande et 0,03 % en Suède (Anon, 1998).…”

Salmonella enterica subsp houtenae serogroup O:16 in a HIV positive patient: case report

“…Although Salmonella enterica subsp houtenae currently comprises 71 distinct serovars (POPOFF & LE MINOR, 2001) human infections due to this microorganism are rarely documented, with less than 1% of isolations (TAUNAY et al, 1996;TAVECHIO et al, 2002). We report the isolation of this species of Salmonella from blood culture of a HIVinfected patient in Rio de Janeiro, Brazil.…”

Cinética de crescimento de Salmonella Enteritidis envolvida em surtos alimentares no RS: uma comparação com linhagens de outros sorovares

“…Embora diversos sorovares de Salmonella tenham sido encontrados em diferentes alimentos comercializados no RS, o sorovar S. Enteritidis tem sido identificado como o causador da maioria das salmoneloses alimentares investigadas pela Secretaria de Saúde do Estado, nos últimos anos 6 . Esse sorovar também tem sido reconhecido como o principal patógeno alimentar, não apenas no RS, mas em outros Estados brasileiros como, por exemplo, Santa Catarina, Paraná e São Paulo 1, 19,22,26 , o que demonstra sua importância.…”