leetriviiruse tekitatud, palavikuga kulgev lööbehaigus, mida enamik mittekaitsepoogitutest põeb lapsepõlves, an acute contagious disease that is caused by a paramyxovirus of the genus Morbillivirus (species Measles virus), that commences with catarrhal symptoms, conjunctivitis, cough, and Koplik's spots on the oral mucous membrane, and that is marked by the appearance on the third or fourth day of an eruption of distinct red circular spots which coalesce in a crescentic form, are slightly raised, and after the fourth day of the eruption gradually decline, a highly contagious viral disease common in children, characterized by fever, profuse nasal discharge of mucus, conjunctivitis, and a rash of small red spots spreading from the forehead down to the limbs