Lessons learned — and forgotten — from the horrific epidemics of the U.S. Civil War
Comparing the Covid-19 vaccines developed by Pfizer, Moderna, and Johnson & Johnson
In Q&A, Vice President Harris calls for urgent action on the Black maternal health crisis
Why would a Covid vaccine cause rare blood clots? Researchers have found clues
Next-generation Covid-19 vaccines are supposed to be better. Some experts worry they could be worse
