OTOH, there are discussion [0] about "hyper hygiene" and long-term effects on imunne system, including leukemia in children [1]. Contact with some diseases is

OTOH, there are discussion [0] about "hyper hygiene" and long-term effects on imunne system, including leukemia in children [1]. Contact with some diseases is desirable, just not with _all_ diseases. [0] https://news.ycombinator.com/item?id=25989726 https://news.ycombinator.com/item?id=25989726 [1] https://www.theguardian.com/science/2018/dec/30/children-leukaemia-mel-greaves-microbes-protection-against-disease https://www.theguardian.com/science/2018/dec/30/children-leu...