The Latest: Studies: Immune system clue to virus reactions

NEW YORK — One of COVID-19′s scariest mysteries is why some people are mildly ill or have no symptoms and others rapidly die — and scientists are starting to unravel why.
An international team of researchers found in some people with severe COVID-19, the body goes rogue and attacks one of its own key immune defenses instead of fighting the coronavirus. Most were men, helping to explain why the virus is hitting men harder than women.
Separate research suggests children fare bett