FYI, if you see declarations about new COVID variants evading immunity:

1) this isn't about the vaccines, which work against the variants

2) the issue is naturally acquired immunity, based on placebo data from the Novavax trial in South Africa

/1 https://twitter.com/profshanecrotty/status/1355552010158764036

3) that placebo data arguably showed no benefit from having prior antibodies--but the cases are all within the placebo group, which wasn't randomized or risk matched, and the numbers are relatively small, so drawing conclusions from it is quite dubious

/2 https://twitter.com/mlipsitch/status/1355999081957613575

4) just to stress it again, this isn't what the Novavax trial was designed to measure, and it's an analysis all within placebo (which isn't randomized against itself)

5) worth looking into, sure, but not something to draw conclusions from on its own

/3 https://twitter.com/CT_Bergstrom/status/1357503342897815552

6) so, please, don't let anyone freak you out with claims about the Novavax trial showing COVID being a mutant supervirus that cannot be stopped

7) and get vaccinated when you can, we know that works

/end https://twitter.com/angie_rasmussen/status/1357504038309302273