TB vaccine?

[born2run]

Dairy herd I work with was evidently vaccinated for TB yesterday. I don't very often talk to the herd manager, and I was curious how this vaccine works, and how common it is? Never heard of it before last night.

 

[KNERSIE]

I have never heard of a TB vaccine, but in order to test a herd for TB the get inoculated with a modified strain usually on a shaved area of the neck. Then 3 days later they are checked for reaction, there would be a sausage like swelling on the spot and the limf nodes will also be swollen.

 

[born2run]

Thanks! I'll look at their necks tonight. Makes a little more sense now.

 

[milkmaid]

My vet does the testing under the tail... or on the sides of the tail head. You can check there too...

 

[mnmtranching]

In North Western MN where TB was found in a couple herds of beef cattle, the area herds have been vaccinated.