The variations are the basis of a new study reviewed by Scientific American, based on analysis of dust extracted from different households. The dust was sampled from the tops of doors in some 1,200 ...

There are more than seven main types of pneumonia, including community-acquired pneumonia caused by bacteria and viruses. Other types include walking, aspiration, chemical, and hospital-acquired ...

A national poll last spring found that one out of three Americans do not take their shoes off when entering their home. A national poll last spring found that one out of three Americans do not take ...

In 10 flights over Japan, researchers found a host of bacteria and fungi. These high-altitude germs could help spread disease around the world. By Carl Zimmer Carl Zimmer has written about airborne ...

Cellulitis may have different symptoms depending on the type of bacteria involved and where on your body it affects. These factors may influence which antibiotics a doctor prescribes to treat ...