Bacteria and viruses are the most common causes of disease, but they have some key differences. Here's what you need to know.

DEAR DR. ROACH: I watched a show that described how a virus invades a cell and found it fascinating. What is the difference between a virus and a bacterial infection? -- G.D. ANSWER: Viral infections ...

Bacteria and viruses are often lumped together as germs, and they share many characteristics. They’re invisible to the human eye. They’re everywhere. And both can make us sick. Bacteria and viruses ...

Disinfectants take more time to work, but they can kill most germs on a surface whereas sanitizers reduce the amount of germs but don't kill them all.

Viruses in man-made environments cause public health concerns, but they are generally less studied than bacteria. A recent study led by environmental scientists from City University of Hong Kong ...

Mosquito bites aren't just pesky and annoying. They can also be dangerous. Some mosquitoes carry germs that can infect people bitten by them. In Massachusetts, some of the viruses that mosquitoes ...

Bacteria and viruses are often lumped together as germs, and they share many characteristics. They’re invisible to the human eye. They’re everywhere. And both can make us sick, even kill us. That last ...