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Articles on Antibody

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Both President Donald Trump and first lady Melania Trump have tested positive for COVID-19. MANDEL NGAN/AFP via Getty Images

Trump is taking the latest in COVID-19 treatments – here’s what doctors know works against the virus

The president and first lady Melania Trump have both tested positive for the coronavirus. Here's what the physicians and scientists know about the best treatments for the disease it causes.
This antibody adopts a Y-shape. The arms of the Y make up the part of the antibody that binds to the target. ALFRED PASIEKA/SCIENCE PHOTO LIBRARY

One small part of a human antibody has the potential to work as a drug for both prevention and therapy of COVID-19

Antibodies are great for neutralizing viruses. But they are big and bulky. Antibody engineers are now creating smaller synthetic antibody-like molecules that may be better for fighting COVID-19.
An artist’s impression of antibodies (red and blue) responding to an infection with the new coronavirus SARS-CoV-2 (purple). KTSDESIGN/SCIENCE PHOTO LIBRARY / Getty Images

Declining antibodies and immunity to COVID-19 – why the worry?

If antibody levels drop dramatically after an infection, what does that mean for immunity? An expert explains how B and T cells contribute to immunity and why antibodies don't tell the full story.
For those who have suffered from COVID-19, do their antibodies guarantee immunity from subsequent disease? Sebastian Kaulitzki/Science Photo Library via Getty Images

Am I immune to COVID-19 if I have antibodies?

If you have had COVID-19 already, are you protected from another bout of the illness? And is the presence of antibodies in your blood a guarantee of immunity?

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