Three types of parasites can cause disease in humans. They are protozoa, carried by mosquitos, helminths, such as roundworm, and ectoparasites, for instance lice and bed bugs. Parasites are organisms ...

Nontuberculous mycobacteria (NTM) are known as atypical mycobacteria. That means they’re related to tuberculosis, but they don’t cause the same disease. In fact, NTM are generally harmless. That’s a ...

Nosocomial infections are infections that develop while a person is receiving medical attention. Examples include pneumonia, urinary tract infections (UTIs) and gastrointestinal (GI) infections. The ...

Cellulitis may have different symptoms depending on the type of bacteria involved and where on your body it affects. These factors may influence which antibiotics a doctor prescribes to treat ...

Some pathogens cause infections that can lead to cancer. Infections are caused by pathogens that enter your body. Pathogens include viruses, bacteria, protozoa, and parasitic worms (also known as ...

Your body might be sending you hints about your health.

Our immune system implements an array of strategies to combat threatening infections. White blood cells called cytotoxic T ...