ok here is jean's response
Deb: Yes, so I’ll explain. Some manufacturers claim that they add some extra antigenic mass in the 3 –yr product – BUT, in fact the label specification is intended for legal documentation purposes. Because, puppies must have two doses of vaccine within a year to complete the protocol as required by law. So, the veterinarian gives a rabies vaccine labeled one year initially, and thus the client record indicates that only the first of two doses was given, as it legally expires in a year. Then when the puppy is due for his/her second dose, a 3 –yr product is given because the 3rd dose would be due three years from now.
If by accident, the veterinarian’s chart shows that a 1-yr labeled product was given for the second dose , in error, then legally it would expire a year later. This has happened and led to lawsuits and pet quarantine and even confiscation and euthanasia because the product was legally expired – though medically equivalent. |