Common Infections: Pathogens and Symptoms

Common Infections: Pathogens and Symptoms

Infectious diseases are illnesses caused by pathogenic microorganisms, such as bacteria, viruses, fungi, or protists, that can be spread directly or indirectly from one person to another. These pathogens invade the body, multiply, and can cause a range of symptoms depending on the type of pathogen and the body system affected. Understanding the specific pathogen and its symptoms is crucial for diagnosis and treatment.