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This is a leaky vaccine, which is actually a big health risk. You remove selection pressure for lack of virulence, so more fatal strains can spread more easily.
by TrevorJ 6y ago
This is a leaky vaccine, which is actually a big health risk. You remove selection pressure for lack of virulence, so more fatal strains can spread more easily. Definitely not a good thing.
- narrator 6y agoI know about Marek's disease in chickens, but has a leaky vaccine ever caused a virus to evolve like that in humans?
- TrevorJ 6y agoWould there be anything in particular about the study of that case which would not be valid in humans? I've seen articles/studies from before Covid that suggest this sort of thing could be a concern in humans, but no reported cases of it happening. On the other hand, we don't exactly have a control group, so there's not a good way to tell.