Infectious Disease

Infectious diseases are illnesses caused by microorganisms like bacteria, viruses, fungi, and parasites. These pathogens can invade the body, multiply, and lead to various symptoms ranging from mild to severe. In internal medicine, physicians diagnose and treat these conditions, focusing on how they affect internal systems and overall health. Common examples include the flu, HIV, tuberculosis, and COVID-19. Effective treatment often involves medications like antibiotics or antivirals, but prevention through vaccination and hygiene practices is equally important to control the spread of these diseases.