| seroprevalence of coxiella burnetii in selected populations of domestic ruminants in newfoundland. | the seroprevalence of coxiella burnetii among cattle, sheep, and goats in newfoundland was determined by microimmunofluorescence. seropositivity to phase ii antigen increased in sheep from 3.1% in 1997 to 23.5% in 1999-2000 (p < 0.001). cows (24%) had antibodies to phase i antigen; goats (15.6%) had antibodies to phase ii antigen. seroprevalence of c. burnetii is increasing among sheep. | 2002 | 12001502 |
| goat-associated q fever: a new disease in newfoundland. | in the spring of 1999 in rural newfoundland, abortions in goats were associated with illness in goat workers. an epidemiologic investigation and a serologic survey were conducted in april 1999 to determine the number of infections, nature of illness, and risk factors for infection. thirty-seven percent of the outbreak cohort had antibody titers to phase ii coxiella burnetii antigen >1:64, suggesting recent infection. the predominant clinical manifestation of q fever was an acute febrile illness. ... | 2001 | 11384518 |
| caprine-associated q fever in newfoundland. | | 2000 | 10726366 |