The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...

Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. More recent studies — but not all — show waning effectiveness of the mRNA vaccines to prevent ...

In a recent study published in Scientific Reports, researchers investigated whether trypsin, a protease, increased severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infectivity. In addition ...

Vaccination was shown to lower risk of developing severe COVID-19 in both variants, with the largest difference in risk observed in patients aged 40 to 59 years. Patients infected with the SARS-CoV-2 ...

The coronavirus has come a long way since 2020. While the days of sanitizing Amazon packages and standing six feet apart may feel like they’re behind us (and they very well may be), the SARS-Co-V-2 ...

The alpha variant has been the most prevalent lineage of the novel coronavirus in the United States since April, but the U.S. Centers for Disease Control and Prevention expects that is no longer the ...

The COVID-19 pandemic was the third leading cause of death globally in 2020 and the second in 2021, according to a recent World Health Organization report. The almost 13 million lives lost during ...

Part of the problem is low vaccination rates, experts said. The Centers for Disease Control and Prevention assigned two federal "surge team" members to Missouri this week to help fight the state's ...

LAS VEGAS, NEVADA -- A California couple says they were fully vaccinated, but still contracted COVID-19 while on vacation as experts say breakthrough cases are possible, especially with the delta ...

The delta variant of SARS-CoV-2, the virus that causes COVID-19, has been making headlines as it has quickly become the most prevalent strain in America. But other variants of the virus are still out ...

OAKLAND, Calif. (KGO) -- The American Academy of Pediatrics is recommending that all children over the age of two wear masks to school, regardless of their vaccination status. This contradicts the CDC ...