As a) is likely to reduce the serious cases faster, that seems like a point in its favor. One complication might be if people getting mild cases end up spreadi

As a) is likely to reduce the serious cases faster, that seems like a point in its favor. One complication might be if people getting mild cases end up spreading the variant faster, because they are not incapacitated by it - but it is not as if it is having much difficulty spreading now, despite the serious cases it creates, as it seems to spread before it incapacitates. I don't think this possibility demands that we stop using this vaccine until this issue is unequivocally settled.