Prevalence of Coxiella burnetii infections among North Dakota sheep producers.
Guo-HR; Gilmore-R; Waag-DM; Shireley-L; Freund-E
J Occup Environ Med 1998 Nov 40(11):999-1006
A case of Q fever in a sheep producer was detected by a surveillance system in North Dakota in 1993, when Q fever was not reportable. This is the first officially documented case in the state. To estimate the prevalence of Coxiella burnetii infection and identify associated risk factors, we conducted a study covering the whole state. A total of 17 cases were identified among 496 sheep producers, their family members, and hired helpers. The number of sheep raised was a good predictor of C. burnetii infection. Lambing outdoors and frequent physical contacts with sheep during lambing were associated with a higher risk, but petting dogs was correlated with a lower risk. We conclude that C. burnetii infection is prevalent among sheep producers in North Dakota. As the result, Q fever became a reportable disease in North Dakota.
Animal-husbandry-workers; Disease-transmission; Disease-vectors; Infection-control; Infectious-diseases; Zoonoses
How-Ran Guo, MD, ScD, Department of Environmental and Occupational Health, National Cheng Kung University Medical College, 138 Sheng-Li Road, Tainan 70428, Taiwan, R.O.C.
Journal of Occupational and Environmental Medicine