Measles is one of the most highly communicable infectious illnesses caused by an RNA paramyxovirus, with a morbidity and mortality underestimated by the general population.
Measles is spread by airborne or droplet transmission
Individuals are infectious from the beginning of the prodromal period (when the first symptom appears) to four days after the appearance of the rash
The incubation period is about ten days (ranging between seven and 18 days) with a further two to four days before the rash appears
If a child has the following features then these are strongly suggestive of measles:
It is severe in infants, adults and immunocompromised patients (2).
Measles is a notifiable disease in the UK (since 1940). Notification can be done on clinical suspicion (laboratory confirmation not needed) (1).
Last edited 12/2019 and last reviewed 12/2019