California officials diagnosed seven cows from three Fresno
County herds and one cow from a San Bernardino County herd with
bovine TB in 2008. By late 2009, California had TB-tested
approximately 419,000 cattle. Two herds were depopulated and
over 8,000 cattle killed in the investigation. Two affected
herds were put on a test-and-removal program. In September 2008,
California was classified as Modified Accredited Advanced (MAA).
That status requires veterinarians and producers to check the TB
requirements of receiving states when moving cattle out of
California. Texas detected an affected dairy herd during private
testing to sell the herd in 2009. Six infected cows were
identified, with the strain type matching that detected in old
roping steers of Mexican origin recently slaughtered from a
nearby feedlot. Nebraska detected an affected cervid herd and an
affected beef herd, both through slaughter surveillance, in
2009. Because they have different TB strain types, the
infections were not related. Minnesota has