We won't go into too much detail on this story, leaving readers to follow these links - [link] for in depth reporting from Alberta. And our grateful thanks to the cattle farmer who sent them.
But one snippet caught our attention.
zTB is practically unheard of in Alberta, and as such treated very seriously. Tracing is going back five years, and so far just 6 cattle have proved positive to zTB - all with the same strain of the disease.
After culture and spoligotyping (strain typing of the bacteria) it was found that the strain of zTB in these cows had not been found in Canada before, and was genetically very similar to a strain predominate in Central Mexico. The latest information from Alberta tells us that:
Genetic analysis has shown that the bovine TB organism from the infected cows is not the same as any strains detected in Canadian domestic livestock or wildlife or humans to date. All six currently confirmed positive cows have the same strain of TB. This strain of TB identified in these confirmed cows is closely related to a strain first found in cattle in Central Mexico in 1997.Mexican herdsman with a cough? Just a thought.
And please, don't tell President Trump.