The latest data out of Israel (they seem to be doing the best and most trustworthy work) suggests the vaccine is not quite as effective against delta (but still very good) and loses strength as time passes.
They had a several month head start on the US in terms of vaccinations and exposure to delta. They started having a lot of breakthrough cases recently and quickly determined that the further away you are from your vaccination the greater the probability of breakthrough cases and occasional severe cases. So they are giving all their most vulnerable citizens boosters and working their way through the pecking order. So far it's working really well based on what I've been reading.
However, the FDA, politicians in DC, the CDC, the WHO etc.. are all debating boosters for different reasons.
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Last edited by classhandicapper; 09-15-2021 at 05:23 PM.
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