Descriptive Epidemiology of Bovine Tuberculosis in Michigan (1975–2010): Lessons Learned

Table 1

Descriptive epidemiology of BTB in MI cattle, privately owned and wild white-tailed deer (1975–July 2010).

County	BTB (+) cattle herds^a	Total cattle herds^b	BTB Incidence rate/1000 cattle herd-yrs^a	BTB (+) privately owned cervid herds^a	BTB (+) wild white-tailed deer^c	Total wild white-tailed deer tested^c	Prevalence odds of BTB (+) wild white-tailed deer^c
Alcona	13	119	8.7	0	240	18,451	0.0132
Alpena	21	231	7.3	0	186	18,776	0.0100
Montmorency	4	87	3.7	3	130	12,027	0.0109
Oscoda	3	80	3.0	0	74	9,624	0.0077
Presque Isle	2	140	1.1	1	13	9,404	0.0014
Antrim	3	98	2.4	0	1	5,133	0.0002
Emmet	3	135	1.8	0	2	3,413	0.0006
Others^d	0	13,564	0	0	22	107,441	0.0002

^aData 1998–July 2010. ^bData from the 2007 Michigan Agricultural census [24]. ^cData 1975–July 2010. ^dOther counties in Michigan.