Short informational twitter thread:<p><a href="https://twitter.com/johnrossmd/status/1527045028417241088" rel="nofollow">https://twitter.com/johnrossmd/status/1527045028417241088</a><p>A slightly alarming note on COVID’s effect on the immune system:<p><a href="https://twitter.com/RadCentrism/status/1527103604590465024" rel="nofollow">https://twitter.com/RadCentrism/status/1527103604590465024</a>