Exposure to microbes and potential allergens relevant to the hygiene hypothesis doesn't seem likely to have changed very much - it's not like people started kee

Exposure to microbes and potential allergens relevant to the hygiene hypothesis doesn't seem likely to have changed very much - it's not like people started keeping their babies in sterile bubbles. While lots of wishful thinkers jumped on the concept in recent years, the hygiene hypothesis doesn't apply to disease-causing pathogens like COVID or the flu. But yes, will be something to pay attention to, considering the massive volume of COVID infections and COVID's negative effects on the immune system.