Rising Case numbers are leading universities to shift classes online.

About 57 million Americans have received a booster shot on top of a regular vaccination.

Deal would allow Brazil’s Eurofarma to produce at least 100 million doses annually for distribution in the region.

The spike protein, which gives the virus its unmistakable shape, may hold the key.

It was India's first launch of 2021.

The Delta coronavirus variant is driving record-breaking case counts in Louisiana and other states.

New face-mask and vaccination mandates leave many frustrated, uncertain regarding next steps.

Doses needed to address shortfall in poor countries, agency says.

A Covid-19 surge is battering the far corners of the archipelago, where hospitals are ill-equipped to respond.

The pandemic is pummeling the country’s economy, adding to the frustrations of an impoverished majority.

Even with about 50% of the U.S. population vaccinated, there have still been about 400,000 new coronavirus cases in the past month.