| prevalence of streptogramin resistance genes among enterococcus isolates recovered from retail meats in the greater washington dc area. | the prevalence of streptogramin resistance genes in enterococci recovered from retail poultry in the greater washington dc area was examined. forty-three chicken and 32 turkey retail samples were analysed. thirty-one non-enterococcus faecalis enterococcal strains were isolated that displayed mics of quinupristin-dalfopristin and virginiamycin of > or = 4 mg/l. these included enterococcus faecium (turkey n = 4, chicken n = 23), enterococcus gallinarum (turkey n = 2, chicken n = 1) and enterococcu ... | 2002 | 12461007 |
| the isolation of antibiotic-resistant salmonella from retail ground meats. | salmonella is a leading cause of foodborne illness. the emergence of antimicrobial-resistant salmonella is associated with the use of antibiotics in animals raised for food; resistant bacteria can be transmitted to humans through foods, particularly those of animal origin. we identified and characterized strains of salmonella isolated from ground meats purchased in the washington, d.c., area. | 2001 | 11642230 |
| foodborne outbreak of group a rotavirus gastroenteritis among college students--district of columbia, march-april 2000. | on march 31, student health services at a university in the district of columbia (dc) notified the dc health department that an increased number of students had become ill with acute gastroenteritis beginning march 29. some ill students reported eating tuna or chicken salad sandwiches from dining hall a on campus. on march 31, the dc health department initiated an outbreak investigation. this report summarizes results of the investigation, which indicated that group a rotavirus transmitted by fo ... | 2000 | 11190116 |
| prevalence of campylobacter spp., escherichia coli, and salmonella serovars in retail chicken, turkey, pork, and beef from the greater washington, d.c., area. | a total of 825 samples of retail raw meats (chicken, turkey, pork, and beef) were examined for the presence of escherichia coli and salmonella serovars, and 719 of these samples were also tested for campylobacter spp. the samples were randomly obtained from 59 stores of four supermarket chains during 107 sampling visits in the greater washington, d.c., area from june 1999 to july 2000. the majority (70.7%) of chicken samples (n = 184) were contaminated with campylobacter, and a large percentage ... | 2001 | 11722889 |
| update: west nile virus activity--eastern united states, 2000. | data reported to cdc through the west nile virus (wnv) surveillance system have shown an increase in the geographic range of wnv activity in 2000 compared with 1999, the first year that wnv was reported in the western hemisphere. in response to this occurrence of wnv, 17 states along the atlantic and gulf coasts, new york city, and the district of columbia conducted wnv surveillance, which included monitoring mosquitoes, sentinel chicken flocks, wild birds, and potentially susceptible mammals (e ... | 2000 | 11105767 |
| evolution of the a/chicken/pennsylvania/83 (h5n2) influenza virus. | the epidemiological features of the h5n2 outbreak of influenza in poultry were studied by sequencing the ha genes of several viruses isolated during the epidemic. comparison of the nucleotide sequences of the ha genes indicated there was a single introduction of virulent virus. the variation rate (silent mutations) in the ha gene of the virulent ck/penn virus was 9.0 or 14.4% per 10 years depending on the viruses compared and was similar to that in h3 ha gene of human influenza a virus. the viru ... | 1985 | 4036005 |