4 ms·

Any herd immunity scenario is conditionnal on immunity is long-lasting, which is far from certain considering related viruses are recurring seasonally or in sin

Any herd immunity scenario is conditionnal on immunity is long-lasting, which is far from certain considering related viruses are recurring seasonally or in single-digit year intervals. Don't bet the farm on it.

nradov 7y ago
Even if infection doesn't confer permanent total immunity, subsequent reinfections are likely to be less severe as the immune system is primed to respond. So herd immunity is still a viable strategy.
FrojoS 7y ago
Maybe, but this particular virus is believed to not mutate much.