Infectious Diseases

Diseases caused by the introduction of infectious agents such as bacteria, viruses, parasites, or fungi into the body.

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Avoiding Infectious Diseases
There are all sorts of ways to get an infectious disease—from people and animals, to eating contaminated foods, to environmental exposure.

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COVID-19
COVID-19 is the disease caused by the SARS-CoV-2, the 2019 novel coronavirus.
Cellulitis
A common bacterial infection of the skin that causes pain, redness, and swelling.
Clostridium difficile ( C. diff )
A type of bacteria, Clostridium difficile ( C. diff ), causes one of the most common health care-associated infections in the United States.
Colds: How to Prevent Them
The common cold is probably the most universal illness. It is a viral infection of the upper respiratory tract, which includes the nose and throat area.
Conjunctivitis
A condition in which the conjunctiva, the thin lining of the eyelids and whites of the eyes, becomes inflamed.
Coronavirus
Coronavirus is a term describes a family of viruses, common in both animals and humans.
Croup
A respiratory infection that mainly affects children and causes a barking cough, hoarseness, and breathing difficulties.

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Dengue Fever
Dengue fever, also called dengue, is a mosquito-borne illness caused by infection with any of four closely related dengue viruses. It can cause a range of symptoms including fever, headache, pain behind the eyes, nausea, vomiting, aches and pains, and rash.

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Influenza (Flu)
The flu is a common contagious viral infection that attacks the respiratory system. Learn about symptoms and treatment.

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Urinary Tract Infection (UTI) in Children
A urinary tract infection is a condition in which there is an Infection along the urinary tract. Learn about symptoms and treatment.

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Yeast Infection
A yeast infection is a disrupted balance of good bacteria and yeast around the vagina that causes itching and discomfort. Learn about causes and treatment.