UK has reported over 50% rise in weekly Covid cases while daily infections in South Africa have swelled by 75-times since the start of Nove...

Relying on USD 1.7 billion in President Joe Biden's coronavirus relief bill, the US has been setting up a national network to better track ...

As the devastating Delta variant surge eases in many regions of the world, scientists are charting when, and where, COVID-19 will transitio...

There's no guarantee that a delta-specific booster shot would protect any better.

Vaccines used in the U.S. remain strongly effective against hospitalization and death from COVID-19, even after the delta variant took over...

Data suggests that B.1.617.2 has a 15% growth rate faster than even B.1.1.117 (the UK Kent variant). The Kent variant was predominant in th...

The coronavirus is becoming more genetically diverse, and health officials say the high rate of new cases is the main reason. Each new infe...

"Based on the data to date, we expect that the Moderna vaccine-induced immunity would be protective against the variants recently described...

Viruses naturally evolve as they move through the population, some more than others. It's one reason we need a fresh flu shot each year. Ne...

The brunt of the disease has been felt most heavily in New York, Italy, France, Spain and the United Kingdom, but grim projections of a vir...

Trevor Bedford started analyzing Covid genomes from China as soon as they went public.

Researchers led by Wu-Chun Cao sequenced 175 Ebola virus genomes from people who were infected with the virus, including some who died.