| plague surveillance in brazil: 1983-1992. | plague caused by yersinia pestis, has persisted in brazil in several natural foci spread throughout rural areas in the states of ceara, paraiba, pernambuco, piaui, rio grande do norte, alagoas, bahia, minas gerais and rio de janeiro. nationwide surveillance of plague in brazil based on serological testing started in 1983. we now present an update report of the examinations carried out in our laboratory from 1983 to 1992. the passive hemagglutination test for antibodies against fraction 1a antige ... | 1995 | 8731264 |
| [the absence of yersinia enterocolitica in foods and animal reservoirs in areas of the state of pernambuco, brazil]. | a search for the presence of enteropathogenic bacteria in fresh vegetables obtained in 5 restaurants from the city of recife, revealed neither yersinia enterocolitica nor other pathogenic bacteria in 96 samples analyzed. furthermore, y. enterocolitica was not found in the oral and rectal swabs taken from 15 apparently healthy pigs at an abattoir in the municipality of bonito in the pernambuco state. another search in which twenty one rodents from four species and one marsupial specimen were exam ... | 1997 | 9273565 |
| prevalence of toxoplasma gondii in slaughtered pigs in the state of pernambuco, brazil. | abstract the objective of this research study was to investigate toxoplasma gondii antibodies and parasite dna in pigs in the state of pernambuco, brazil. blood samples were collected from 305 slaughtered pigs from 11 municipalities and their serum was tested for t. gondii antibodies using the indirect fluorescent antibody test (ifat, cutoff 1:64); 38 (12.5%) samples were positive. attempts were made to detect t. gondii dna in the heart tissue of seropositive pigs using b 1 gene and pcr; 21 (5 ... | 2012 | 22263703 |