Six years ago, on March 11, 2020, the World Health Organization declared COVID-19 a global pandemic. Here's what else happened on that day.

The World Health Organization is estimating that nearly 15 million people were killed either by the coronavirus or by its impact on overwhelmed health systems in the past two years, more than double ...

Experts explain why this particular strain is more likely to overcome immunity from vaccination or previous infection.

The U.S. greatly undercounted COVID-19 deaths in the early months of the pandemic, according to a new study. The research, ...

Six years ago this week, on March 11, 2020, the World Health Organization (WHO) officially declared the global outbreak of COVID-19 a pandemic. In the six years since, the pandemic has killed over 30 ...

BANGKOK — The worldwide death toll from COVID-19 has surpassed 6 million. The tragic number confirmed Monday is believed to be a vast undercount and shows that the pandemic in its third year is far ...

A growing proportion of COVID-19 deaths are occurring among the vaccinated, a new ABC News analysis of federal data shows. In August of 2021, about 18.9% of COVID-19 deaths occurred among the ...