Can microorganisms be harmful?

Microorganisms:

1. Microorganisms are single-celled, microscopic organisms that normally form a colony of cells.
2. Microorganisms such as bacteria, viruses, protists, and fungi are well-known.
3. These bacteria have a variety of effects on human bodies.
4. By infecting the host's body through several vectors, they can make them sick.
5. They reside within the host cells, eat their food, and then reproduce within the cell to destroy the entire cell.
6. Infectious diseases such as the flu and measles are caused by microbes.
7. Microbes are also thought to have a role in a variety of non–infectious chronic disorders, including cancer and coronary heart disease.
8. Different sorts of microorganisms produce different diseases.