Simple cloth masks that cover the mouth and nose can prevent virus transmission by people who are infected but not symptomatic when they are out buying groceries or seeking medical care, according to memos obtained by The Washington Post. View original article Contributor: Lena H. Sun
Report matches concerning pattern in China and Italy, with a warning for the chronically ill. View original article Contributor: Joel Achenbach
Mass closures threatened to halt the ever-urgent supply of blood, and volunteers were marshaled nationwide to help. But blood banks have said they need that energy to carry them for months more. View original article Contributor: Alex Horton
Serology tests that measure coronavirus antibodies could restart society, but this will require accurate, widespread testing and more information about immunity. View original article Contributor: Carolyn Y. Johnson
The C.D.C. director says new data about people who are infected but symptom-free could lead the agency to recommend broadened use of masks. View original article Contributor: