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Pathogens are microorganisms or infectious agents that can cause disease in their host organisms. These agents include bacteria, viruses, fungi, protozoa, and prions, each capable of invading living tissues, multiplying, and disrupting normal physiological functions. Pathogens spread through various routes, such as direct contact, airborne transmission, contaminated food or water, and vectors like insects or animals.
Bacteria are single-celled organisms that reproduce rapidly and can release toxins harmful to the host. Examples
Pathogens exhibit varying degrees of virulence, or disease-causing potential, and can be classified as opportunistic or
Prevention and control of pathogen transmission rely on hygiene practices, vaccination, antibiotics (for bacterial infections), and