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

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 ...

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 ...

It's not easy to tell these health conditions apart based on their symptoms alone. Find out about the differences between these illnesses.

Medically reviewed by Amelia MacIntyre, DO Strep throat is a bacterial infection, while the common cold is a viral infection. You will need antibiotics to treat strep throat, but colds usually go away ...

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

Coughs and colds are rife this time of year. But a doctor has revealed how can you tell when they might be a sign of ...

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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 ...