Measles, also known as morbilli, English measles, or rubeola (and not to be confused with rubella or roseola) is an infection of the respiratory system, immune system and skin caused by a virus, specifically a paramyxovirus of the genus Morbillivirus. Symptoms usually develop 7â14 days (average 10â12) after exposure to an infected person and the initial symptoms usually include a high fever (often > 40 °C [104 °F]), Koplik’s spots (spots in the mouth, these usually appear 1â2 days prior to the rash and last 3â5 days), malaise, loss of appetite, hacking cough (although this may be the last symptom to appear), runny nose and red eyes. After this comes a spot-like rash that covers much of the body. The course of measles, provided there are no complications, such as bacterial infections, usually lasts about 7â10 days.
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