Quote:
Originally Posted by densa44
The biology on this one is not settled. Traditional knowledge says once vaccinated you are immune for life. I'm not sure how these "expired" ones got started but with rabies better sure than sorry.
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The biology isn't conclusive because they have subject thats are all over the place with vaccination. Some have lasted long term. Some show no immunity 5 years later. Some never.
There are lots of variables.