This is an old strategy. Started at least with delta. The easy response is "what environmental pressures are naive immune systems placing on the virus that make it mutate in a direction that causes the vaccine to lose effectiveness?
This is an old strategy. Started at least with delta. The easy response is "what environmental pressures are naive immune systems placing on the virus that make it mutate in a direction that causes the vaccine to lose effectiveness?
This is an old strategy. Started at least with delta. The easy response is "what environmental pressures are naive immune systems placing on the virus that make it mutate in a direction that causes the vaccine to lose effectiveness?
Fauci: https://youtu.be/81nsjv7E-OE