Coronavirus

A key mutation increase the ability of the virus to bind to human cells, but Pfizer's vaccine still works against it.

A new study highlights specific mutations that raise this concern.

Overall, the benefits of the vaccine outweigh the potential risks, the CDC said.

A coronavirus variant identified in South Africa may not be as vulnerable to COVID-19 vaccines as other strains, some scientists say.

The U.K. authorized the shots for emergency use last week.

To protect endangered black-footed ferrets from COVID-19, scientists in Colorado have injected a major captive breeding population with an experimental vaccine.

Here are just some of the ways COVID-19 changed the world in 2020.

The outbreak occurred at the a Chilean research base on the Antarctic Peninsula.

Though the vaccine hasn't been tested in pregnant people, experts think that it's likely safe.

Several severe allergic reactions that were reported among hundreds of thousands of people vaccinated with the Pfizer-BioNTech coronavirus vaccine last week.

The variant has a mutation that may make the virus "sticker" or allow it to bind more tightly to human cells.

A wild mink just tested positive.

As of late summer, governments around the world had pledged US$12.2 trillion of relief in response to the coronavirus pandemic.

Vaccines will likely work just as well against the variant.

On Monday (Dec. 14), the very first doses of Pfizer's COVID-19 vaccine was given in the U.S., marking the start of a long campaign to vaccinate the U.S. public.

Here's how mRNA vaccines work, and why they could make such a difference for vaccine development.

The vaccine appeared safe and effective, but some participants falsely tested positive for HIV.

A new model projects how case rates, hospitalizations and deaths will fall as COVID-19 vaccinations begin.