THURSDAY, Jan. 29, 2026 (HealthDay News) — Strep throat is a common throat infection that often causes a sore throat, fever ...

The itching, redness and swelling of an allergic reaction are caused by mast cells—the vigilant first responders of the immune system that spring into action with histamine-filled granules in response ...

Increased levels of Streptococcus anginosus, a common type of bacteria that usually lives in the mouth and gut, was found in the gut of recent stroke survivors in Japan. A common bacteria usually ...

Strep infections are most well known for causing strep throat, which can be treated with antibiotics. But this type of bacteria can also cause more serious illnesses—even flesh-eating infections.

Rheumatic fever (RF) and scarlet fever are both caused by group A Streptococcus bacteria, but they present with different symptoms and complications, some of them potentially serious. Scarlet fever is ...

Pneumonia is a disease that burdens the health care system with more than 1.2 million emergency room visits each year and more than 41,000 adult deaths in the United States. Worldwide, more than one ...