Where are we with the hygiene hypothesis?
caitlinrivers.substack.com
An interview with an immunologist on whether exposure to viruses helps the immune system to develop in children.

The answer is "no" and that entire theory is misinformed.

Where's that data scientist whose around here downplaying covid and saying the only reason kids are filling hospitals is because they were locked down for two years (lol) and therefore don't have immune systems?