> I didn't get my annual cold last winter, which was awesome The best theory of why some people are asymptomatic with covid is previous coronavirus infections,

> I didn't get my annual cold last winter, which was awesome The best theory of why some people are asymptomatic with covid is previous coronavirus infections, from the common cold, so maybe this isn't the best approach. ;) Our immune systems weren't designed with a clean room in mind. There are a few childhood cancers and problems that are possibly caused by not having enough exposure to pathogens, like leukemia, blood cancers, allergies. So, I think it's complicated.