A parasite called Toxoplasma gondii infects an enormous number of people around the world. Scientists estimate that up to one ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

Your immune system may be weak if you have frequent, severe, or extended infections. Learn more signs of a weak immune system.

Many types of liver disease can develop for various reasons. These can include contracting a viral infection, consuming excess alcohol, and having a health condition that impairs the immune system.

Bacterial and viral acute sinus infections typically display similar symptoms. The duration of the infection can help determine if it is viral or bacterial. Many viruses, such as the ones that cause ...

Affecting roughly half a million Americans each year, bacterial infections caused by Clostridioides difficile—commonly known ...