WASHINGTON (AP) — Half of all adults in the U.S. have received at least one COVID-19 shot, the government announced Sunday, marking another milestone in the nation's largest-ever vaccination campaign but leaving more work to do to convince skeptical Americans to roll up their ...

The United States opened more distance between itself and much of the rest of the world Thursday, nearing the 200 millionth vaccine administered in a race to protect the population against COVID-19, even as other countries, rich and poor, struggle with stubbornly high infection rates and ...

Johnson & Johnson's COVID-19 vaccine will remain in limbo for a while longer after government health advisers declared Wednesday that they need more evidence to decide if a handful of unusual blood clots were linked to the shot — and if so, how big the risk really is. The reports are ...

WASHINGTON (AP) — The U.S. on Tuesday recommended a "pause" in use of the single-dose Johnson & Johnson COVID-19 vaccine to investigate reports of rare but potentially dangerous blood clots, setting off a chain reaction worldwide and dealing a setback to the global vaccination ...

RIO DE JANEIRO (AP) — April is shaping up to be Brazil's darkest month yet in the pandemic, with hospitals struggling with a crush of patients, deaths on track for record highs and few signs of a reprieve from a troubled vaccination program in Latin America's largest nation. The Health ...

THE HAGUE, Netherlands (AP) — In Spain, residents now have to be over 60 to get an AstraZeneca coronavirus vaccine. In Belgium, over 55. In the United Kingdom, authorities recommend the shot not be given to adults under 30 where possible, and Australia's government announced similar limits ...