Infection
Invasion of an organism's body by pathogenic agents
Infection
An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. An infectious disease is an illness resulting from an infection, and some infectious diseases are also communicable (transmissible). Infections can be caused by a wide range of pathogens, most prominently bacteria and viruses. Hosts can fight infections using their immune systems. Mammalian hosts react to infections with an innate response, often involving inflammation, followed by an adaptive response. Treatment for infections depends on the type of pathogen involved. Common medications include: Antibiotics for bacterial infections. Antivirals for viral infections. Antifungals for fungal infections. Antiprotozoals for protozoan infections. Antihelminthics for infections caused by parasitic worms. Infectious diseases remain a significant global health concern; communicable, maternal, neonatal, and nutritional diseases together...
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