👉 Infection is a biological process initiated when a pathogen, such as a virus, bacterium, fungus, or parasite, enters a host and begins to multiply or cause disease. This interaction between the invading microorganism and the host's body involves complex mechanisms where the pathogen exploits host cells for survival and reproduction, often evading or suppressing the host's immune response. Infection can lead to various outcomes, from mild symptoms to severe illness or death, depending on factors like the type of pathogen, the host's immune system, and environmental conditions. Understanding infection is crucial for developing treatments and preventive measures, such as vaccines and antibiotics, to protect against and manage infectious diseases.
