Rickettsia prowazekii

Rickettsia prowazekii is a bacterium that causes epidemic typhus, a serious infectious disease. It is transmitted to humans through the bite of infected body lice. Once inside the body, it infects the cells lining blood vessels, leading to symptoms like fever, headache, rash, and fatigue. The infection can be severe if not treated properly with antibiotics. Rickettsia prowazekii is notable for its ability to survive inside cells and its historical association with outbreaks in crowded, unsanitary conditions. Proper hygiene and insect control are key to preventing its spread.