The difference between bacteria and viruses, which is more harmful, and how to prevent infection from both

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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What's the difference between gram-positive and gram-negative bacteria?

There are two main types of bacteria, and these categories reflect the microbes' biology and their vulnerability to different antibiotics. When you purchase through links on our site, we may earn an ...