<prompt> About measles true is ?Incubation period is 5 daysOtitis media is the most common complicationCaused by ohomyxovirusLarge number of carriers  <response>: Ans. is b i.e., Otitis media is the most common complication Measles is caused by a RNA virus of paramyxovirus family. The only source of infection is a case of measles, carriers are not known to occur. 