Human Pathogens

Human pathogens are microorganisms—such as bacteria, viruses, fungi, or parasites—that can cause disease in humans. They invade the body and disrupt normal functions, leading to illnesses like the flu, tuberculosis, or athlete’s foot. These pathogens can spread through various routes, including direct contact, contaminated objects, air, food, or water. Not all microorganisms are harmful; many are harmless or beneficial, but pathogens have specific abilities to infect and cause health issues. Understanding these microbes helps in preventing, diagnosing, and treating infectious diseases effectively.