Measles is a highly contagious viral infection that primarily affects the respiratory system. It is characterized by the presence of a high fever, cough, runny nose, and a widespread rash that typically starts on the face and neck before spreading to the rest of the body. Measles can also cause complications such as pneumonia, encephalitis, and in severe cases, death. The measles virus is spread through respiratory droplets and can remain airborne for extended periods of time, making it easily transmitted in crowded environments. Vaccination with the MMR (measles, mumps, and rubella) vaccine is highly effective in preventing measles infection.
