Antibody testing shows whether you've had the COVID-19 virus in the past. It's not the same as testing to see whether you have the virus now.

The COVID-19 pandemic is over, but the virus that caused it is still here, sending thousands of people to the hospital each week and spinning off new variants with depressing regularity. The virus's ...

SARS-CoV-2, the pandemic virus that causes COVID-19, has mutated endlessly since it burst on the scene in late 2019. After infecting hundreds of millions of people around the world, it has spawned ...

Researchers discover that the COVID-19 virus can trigger the production of 'abzymes' -- antibodies that act like enzymes -- which may explain why long COVID symptoms persist even after the infection ...

In the ongoing Omicron era, a new Covid-19 antibody could renew optimism for urgently required SARS-CoV-2 monoclonal therapies. Over the last three years, various ...

Ronapreve, known as REGEN-COV in the United States, can be taken via injection or infusion. It binds tightly to the ...

Rogue antibodies may be to blame for some of long COVID’s pernicious symptoms. Two new studies suggest that antibodies that attack people’s own tissues might cause ongoing neurological issues that ...

A monoclonal antibody appears effective at neutralizing the numerous variants of SARS-CoV-2, as well as related viruses in animals that could pose a threat if they were to begin spreading in people.

Two healthcare workers get COVID-19 vaccinations on the same day. Both show strong antibody responses initially, but six months later one stays healthy while the other contracts the virus. A new study ...

In the ongoing battle against COVID-19, the United States has leaned heavily on vaccines as its primary weapon. While vaccination has been a cornerstone of the country’s public health strategy, it's ...

A recently published study that shows lactating mothers who get the COVID-19 booster pass along the antibodies to their children via their breast milk -- and potentially protect babies too young to ...