Is anyone else having a problem ordering the Canine Herpes Vaccination from their vets? Does anyone know why there is a shortage?

I got mine ok a couple of weeks ago.  There was a shortage last year but I thought it was all sorted out now.

Not according to our vets, they said they can't get hold of it :( ?

I've just ordered my 2nd batch and it's unavailable again!  Apparently a manufacturing problem and not likely to be in stock until May.  Luckily my girl has had her 1st dose some hope that gives her some protection.