Infectious Disease

Infectious Disease is a medical condition caused by bacteria, viruses, fungi, or parasites. These diseases can be spread, directly or indirectly, from one person to another. They are caused by organisms that enter the body and multiply, causing illness.

Causes

Infectious diseases can be caused by various organisms, including:

• Bacteria: These are single-celled organisms that can cause diseases such as tuberculosis, urinary tract infections, and strep throat.
• Viruses: These are smaller than bacteria and can cause diseases such as AIDS, common cold, and Ebola.
• Fungi: These are multicellular organisms that can cause diseases such as ringworm, athlete's foot, and yeast infections.
• Parasites: These are organisms that live on or in a host organism and can cause diseases such as malaria, giardiasis, and toxoplasmosis.

Symptoms

The symptoms of infectious diseases can vary, but often include fever and fatigue. Other symptoms can include cough, shortness of breath, diarrhea, and vomiting.

Prevention

Prevention of infectious diseases includes measures such as vaccination, hand washing, and safe food handling.

Treatment

Treatment depends on the type of infectious disease and can include antibiotics, antiviral drugs, and antifungal drugs.

See Also

• Epidemiology
• Infection
• Pathogen
• Public Health

Infectious Disease Resources
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