Understanding the Four Types of Germs: Viruses, Bacteria, Fungi, and Parasites

Germs

be inhaled or passed to person or object by touching

Germs are microscopic organisms that exist all around us. They are found on our skin, in the air, in soil, in water, and in the food we eat.

There are four main types of germs. These are viruses, bacteria, fungi, and parasites.

Viruses are tiny organisms that cause illness by invading and multiplying in the cells of the body. Common examples of viral illnesses include the flu, the common cold, and HIV.

Bacteria are single-celled organisms that can be beneficial or harmful. Some bacteria live naturally in our bodies and help us digest food and fight off disease. However, other strains of bacteria can cause serious illnesses such as pneumonia, tuberculosis, and meningitis.

Fungi are multicellular organisms that can be found in soil, water, and air. They can cause infections such as athlete’s foot, thrush, and ringworm.

Parasites are organisms that live on or within another living organism and feed on it. Examples include tapeworms, lice, and malaria.

To avoid getting sick from germs, it is important to practice good hygiene, such as washing your hands regularly, covering your mouth and nose when you cough or sneeze, staying home when you are sick, and getting vaccinated when possible.

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