it almost certainly is mutated at least some to further evade the vaccine. by the time the vaccine came out, COVID had already mutated enough to reduce the effe

it almost certainly is mutated at least some to further evade the vaccine. by the time the vaccine came out, COVID had already mutated enough to reduce the effectiveness of the vaccine. Which is why the original predictions that it would keep you from getting or spreading COVID turned out to be overstated. That's not to say it doesn't reduce the chances, but it seems likely as the virus continues to mutate, the effectiveness will reduce until it gets updated.