[ransomnote]

Saying we should never deploy a vaccine unless it’s perfectly effective is saying we should never deploy a vaccine.
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I’m guessing you already know he didn’t say “we should never deploy a vaccine unless it’s perfectly effective” and are just being disruptive.

He and others, like vaccine developer Geert Vanden Bossche are pointing to a well known principle of ‘vaccine escape’ which occurs when one vaccinates at a high point in an epidemic or pandemic. There’s so much selective pressure on the virus that only the strong survives and can go one to attack the vaccinated without their immune system recognizing the pathogen at all. This is immune escape.

[semimojo]

He and others, like vaccine developer Geert Vanden Bossche are pointing to a well known principle of ‘vaccine escape’ which occurs when one vaccinates at a high point in an epidemic or pandemic.

So if we’re not requiring perfection that means we always have some risk of vaccine escape. What level of effectiveness is the minimum acceptable?

No vaccines are perfect so you’re always accepting some risk. Which vaccines are more effective than the Covid ones and would presumably be OK at the height of a pandemic?

Or should we always avoid vaccines when there’s a high incidence of disease about?