📡 Transmission
Airborne — one of the most contagious diseases. Infectious 4 days before/after rash.
⏱ Incubation period
7–21 days (average 10–14)
🌡 Symptoms
High fever, cough, runny nose, red eyes (conjunctivitis). Koplik spots. Then rash.
🛡 Prevention
MMR vaccine — 2 doses give 97% protection. Herd immunity requires 95%+ coverage.
💊 Treatment
No specific antiviral. Vitamin A supplementation. Supportive care.
📊 Case fatality rate
<0.1% developed countries; up to 25% malnourished populations