Lambda is unlikely to be a major problem. It's been around the US for a while but 99% of their current cases are delta, meaning it is likely less infectious. Mu is being potentially a concern because it MAY be able to get past the vaccine response but there is no indication right now that it is as highly infectious as delta....The Lamba and Mu variants loom and will likely overwhelm us with 5th and 6th waves and this only N. Americ,...
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