Your immune system is often able to fend off pathogens it’s never seen before. But defending your body against all of them all at once is a tough challenge.

From breast implants to prosthetic knees, implants can trigger a foreign body response that results in your body rejecting them. Suppressing an immune cell gene could reduce this risk.

People with Down syndrome have an extra chromosome 21. Understanding the effects of those triplicated genes could help improve the health of those with Down syndrome and other medical conditions.

Inflammation is a complicated and important part of how the immune system responds to threats to the body. But when the inflammatory response goes awry, it can lead to serious problems.

Your blood can hold a record of past illnesses. That information can reveal how many people have had a certain infection – like 58% of Americans having had COVID-19 by the end of February 2022.

Research suggests that too-frequent immunizations may lead to a phenomenon called “immune exhaustion.”

Medications to treat COVID-19 are in no way a substitute for the vaccine. But under the right circumstances, some show great promise for helping patients.

An FDA panel has voted against recommending approval of a booster COVID-19 shot for the general population – disappointing some public health officials.

A COVID-19 vaccine does not cause infertility – but it can protect you from the dangerous complications of contracting the virus.

COVID-19 vaccination produces a more consistent immune response than a past infection. With the delta variant, the difference in protection may be even greater.