Vaccines

The health ministry said contamination was reported from multiple vaccination sites. The news raises concern of a supply shortage as Japan tries to accelerate vaccinations amid a surge in cases.

An open letter from 175 experts to President Biden made the ask. "We're not trying to be unreasonable," explains Dr. Paul Farmer, one of the signers. "We're trying to be optimistic and audacious."

In a previous "Coronavirus FAQ," we looked at the medical, practical — and ethical — implications of lying to get a booster or a shot for a kid under 12. And we asked you to share your views.

Some people have reported getting a lighter or heavier period after getting a COVID-19 vaccine. Cause for concern? Doctors say no. Could it be a temporary side effect? That's harder to determine.

A judge's preliminary injunction allows Norwegian Cruise Line to require customers to show vaccination against COVID-19 before boarding, despite a Florida law banning such requirements by businesses.

The pandemic has hurt even routine health services such as vaccines and checkups, as well as immunization outreach, for children around the world, the World Health Organization and UNICEF report.

Dr. Barbara Ferrer, LA County's public health director, describes a recent spike in COVID-19 cases and hospitalizations among Black residents and also county efforts to improve vaccination rates.

They have to figure out how to distribute the vaccines — and keep their citizens interested in getting their jab — without knowing when supplies will arrive.

The beleaguered nation is seeing a surge. The lack of testing means it's difficult to know the extent. One doctor says his Facebook feed is 30% to 40% of notices about those who died of the virus.

The Serum Institute began mass-producing COVID vaccines even before approval. They've made millions of doses. But so far only about 4% of people in India are fully vaccinated. What went wrong?

A World Health Organization representative just advised wearing masks after vaccination. The CDC has a different perspective. We asked public health specialists to weigh in.