Measles (IPA: /ˈmizəlz/)'s an infection of the respiratory system caused by a virus, specifically a paramyxovirus of the genus Morbillivirus. Morbilliviruses, like other paramyxoviruses, are enveloped, single-stranded, negative-sense RNA viruses. Symptoms include fever, cough, runny nose, red eyes and a generalized, maculopapular, erythematous rash. Measles's spread through respiration (contact with fluids from an infected person's nose and mouth, either directly or through aerosol tr… (More on Measles)