Childhood viral infection (5)
(Other definitions for mumps that I've seen before include "Complaint" , "Infectious glandular disease" , "Disease once common in children" , "Viral disease with swellings" , "Infectious childhood disease" .)
(Other definitions for measles that I've seen before include "I appear as 8 [RASH]" , "Children's disease with red spots" , "Rash-causing disease" , "Childhood viral disease" , "Childhood malady" .)