> The delta variant seems both more harmful AND more transmissible (and developed in an area that didn't have vaccines yet last fall). I left it out of the ini

> The delta variant seems both more harmful AND more transmissible (and developed in an area that didn't have vaccines yet last fall). I left it out of the initial explanation for the sake of brevity, but there's several outcomes from a leaky vaccine. Two of them are: increased lethality, and adaptation to vaccines, requiring new vaccines to be developed. So yeah, the delta variant makes it look like we might be dealing with a leaky vaccine scenario.