Wildfire smoke is more than just the scent of burning wood, it’s a complex, shifting mix of thousands of gases and particles.

The average human has about 1.8 trillion immune cells. These cells patrol the body for bacteria, viruses, cancers, and other threats. Vaccines enhance this security system by teaching our immune cells ...

And, yes, COVID vaccination is still a good idea. One recent study estimated the vaccines prevented 2.5 million deaths ...

If you frequent the Harvard Square T station, you may have seen sign boards urging you to “Swab your nose, get $2” in order to “Help detect the next pandemic.” Those signs are part of a program called ...

Dr. Shira Doron, chief infection control officer at Tufts Medicine, says it can be difficult to tell the difference between ...

The runny nose, the coughing – while the discomfort is never fun, knowing if you (or your children) have a virus or just ...