👉 Infection refers to the process by which a pathogen, such as a virus, bacterium, or parasite, enters and takes control of a host organism, leading to disease. This can occur through various means, including direct contact, inhalation, ingestion, or vector-borne transmission. Pathogens invade the body by exploiting weaknesses in the host's defenses, such as damaged tissues or compromised immune responses. Once inside, they multiply and disrupt normal cellular functions, triggering an immune response that may either eliminate the pathogen or cause harm to the host. Understanding infection is crucial for developing preventive measures, treatments, and vaccines to combat diseases and protect public health.
