Re:Covid deaths plunge after 75% of town's adults vaccinated
by bawolff on Tuesday June 01, 2021 @09:02PM
(#27363554)
75% of population getting a vaccine with 50% efficacy could induce heard immunity, it depends what the reproduction rate is. Covid has a fairly high reproduction rate so it seems unlikely (although the 50% number might be incorrect), but as a general principle its possible for 75% of pop with 50% efficacy to trigger heard immunity if the viruses reproduction rate was low enough.
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Re:Covid deaths plunge after 75% of town's adults vaccinated
by mjevans on Tuesday June 01, 2021 @10:01PM
(#27363938)
Mixed with other efforts, E.G. masking and social distancing, create sufficient reduction to make previously stalling campaigns sufficiently effective. Maybe enough to strangle the disease out if those other measures are held long enough.
Re:Covid deaths plunge after 75% of town's adults vaccinated
by totony on Tuesday June 01, 2021 @11:29PM
(#27364507)
From what I recall you'd need about 50% immunity for herd immunity to be reached at a minimum. Assuming 50% 3fficiency (worst case), you would need at least 13% already immune, which seems possible. But imo the efficiency might just be higher like parent said, or it might not be there yet, but deaths slow down because of the vaccine.