Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. SARS-CoV-2's infection sites are well known in the airways and other parts of the body, but new ...

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

Researchers have revealed how a common bacterium, Enterococcus faecalis (E. faecalis), releases lactic acid to acidify its surroundings and suppress the immune-cell signal needed to start a proper ...

Researchers have used a method of total-body imaging to measure and track the body’s immune response to viral infection. The method is a promising platform for studying human immunity in greater ...

Problems with iron levels in the blood and the body's ability to regulate this important nutrient as a result of SARS-CoV-2 ...

A chest infection feels like a temporary illness. A few days of coughing, fever, and fatigue, followed by medication, and life returns to normal. But .

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 ...