Compare & Contrast Bacteria & Viruses. Make sure you write in complete sentences & Use 5 or more sentences to receive full credit.

Most bacteria aren't harmful to humans, but most viruses are potentially harmful.

Bacteria are living organisms, while viruses are parasitic and need a live host to reproduce.

You can prevent the spread of bacteria and viruses by washing your hands with soap and water, and practicing good hygiene.

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

Kelly Burch and Tania Elliott Nov 27, 2020, 3:36 PM

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Bacteria and viruses are the most common causes of illness. ozgurdonmaz/Getty Images

Most bacteria aren't harmful to humans, but most viruses are potentially harmful.

Bacteria are living organisms, while viruses are parasitic and need a live host to reproduce.

You can prevent the spread of bacteria and viruses by washing your hands with soap and water, and practicing good hygiene.

Visit Insider's Health Reference library for more advice.

Bacteria and viruses are the most common causes of disease in humans. When you touch a surface, shake hands, or are exposed to someone's sneeze, you come into contact with new bacteria — and potentially new viruses — which can enter the body when you touch your mouth, nose, or eyes.

Here's what you need to know about the difference between bacteria and viruses, how to prevent their spread, and how to treat bacterial or viral infections if you have them.

The biological difference between bacteria and viruses

Bacteria are single-celled organisms that live all around us — including inside our gut. Most bacteria aren't harmful, and some are even protective. However, a small percentage can be harmful and cause illness.

Viruses are parasitic, which means they need a live host in order to survive. Viruses infect the cells of living beings, including humans, and can cause diseases like the common cold or AIDS. Although most viruses are potentially harmful, some can actually be beneficial.

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