Might want to brush up on your vaccine conspiracy theories
One of the strange things about Covid-19 has been that in most places there’s a very pronounced line after which people start having major complications with Covid-19 and hospitalizations. There’s also a very strange line in similar cities and countries that seem to have been largely unaffected by the virus that show little difference between countries that are being ravaged by the virus.
Evidently the R part of the MMR vaccine is a pretty good indicator of who’s going to get deathly ill and not.
Of course correlation is not causation, but it’s a pretty solid correlation across multiple countries and ages based on MMR vaccination history.
You can find the study here. Read a less dry version here, here, here