Measles is a highly contagious viral infection caused by the measles virus, primarily affecting the respiratory system and characterized by fever, cough, conjunctivitis, and a distinctive rash. Transmission occurs through respiratory droplets, making it easily spread in unvaccinated populations. Complications can include pneumonia, encephalitis, and, in rare cases, death, particularly in young children and immunocompromised individuals. The measles-mumps-rubella (MMR) vaccine effectively prevents measles by stimulating the immune system to produce antibodies against the live-attenuated virus. Routine immunization is recommended for children, adolescents, and adults born after 1957 without prior immunity, with specific indications for healthcare professionals, military personnel, and international travelers. Vaccination significantly reduces the incidence of measles and its complications, contributing to herd immunity.
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