Causes and Spread of Infection Pre-COVID Diseases can be classified as genetic, metabolic, or infectious. Infectious diseases are caused by bacteria, viruses, fungi, and parasites that use our body as

Causes and Spread of Infection Pre-COVID Diseases can be classified as genetic, metabolic, or infectious. Infectious diseases are caused by bacteria, viruses, fungi, and parasites that use our body as

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Causes and Spread of Infection Pre-COVID

Diseases can be classified as genetic, metabolic, or infectious. Infectious diseases are caused by bacteria, viruses, fungi, and parasites that use our body as a host for reproduction and cause illness. Bacteria, viruses, fungi, and parasites. These are all microorganisms which cause infection, yet they are all different in structure, required environment and conditions needed to thrive and multiply. Bacteria is a single celled organism. It’s shape and size can vary greatly from one type of bacteria to another, but its general structure is that of a simple cellular one with a nucleus