Nearly all people hospitalized with COVID-19 develop antibodies against the virus within six days of testing positive, new research indicates.

The antibody S309, first identified in a blood sample from a recovered SARS patient, inhibits the coronavirus that causes COVID-19, researchers report.

A new HIV vaccine shows promise in monkeys for longer-term protection. The work could also help in finding a coronavirus vaccine.

Antibody tests offer a way to find out if we've been exposed to the coronavirus that causes COVID-19. But what are antibodies? An expert explains.

Winter the llama is an unlikely ally in the search for an effective COVID-19 treatment. The latest advance is a synthetic antibody.

Using microchip technology boosts the accuracy of antibody testing of patients recovered from COVID-19. That would help find convalescent plasma donors.

The discovery of an antibody that trigger a "kill switch" in cells and cause them to self-destruct could lead to a new malaria vaccine.

Scientists say they can light up the SARS-CoV-2 virus using glowing antibodies. "We can now see the enemy."

Plasma therapy would use antibodies from the blood serum of COVID-19 survivors to boost the immunity of newly infected patients and those at risk of contracting it.

Plasma therapy would use antibodies from the blood serum of COVID-19 survivors to boost the immunity of newly infected patients and those at risk of contracting it.