3 ms·
Polio is a bit more complicated than that. It's usually harmless in infants; it became a major public health concern only when hygiene resulted in it being con
by cperciva 6y ago
Polio is a bit more complicated than that. It's usually harmless in infants; it became a major public health concern only when hygiene resulted in it being contracted later.
Epstein-Barr is similar, causing mononucleosis in teenagers but only mild symptoms in children.
- mc32 6y agoThank you for the nuance. We have trade offs we have to consider. Hygiene on balance improves health, but it has unintended consequences which we have to be aware of and need to be addressed.