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

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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 ...

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 ...

The viruses that kill bacteria may be our best bet against antibiotic resistance — if we can understand how they win. If bacteria had a list of things to fear, phages would be at the top. These ...

While one of the symptoms of strep throat might be a sore throat, the cause behind it is much different; while your average ...