A widespread effort to prevent the spread of the disease has
been underway for more than a year, 11,500 cattle have been slaughtered at the
one operation where a cow was sent to a U.S. packing plant and tested positive
for TB.
Six more infected animals were detected by the CFIA at that operation.
The testing now includes 31 herds in Alberta, 36 in
Saskatchewan and three in Manitoba. So far four have been tested and found free
of TB.
The CFIA expects this testing to be done by the end of the
year.
So far 97 premises that were infected have been released
from quarantine, including the one that had infected animals and owned cattle
on more than a dozen premises.
