EXPERIMENTAL VACCINATION AGAINST MEASLES

During a measles epidemic in Panama, 453 persons with no previous history of measles were inoculated with a modified live-virus measles vaccine, and 356 others served as controls. About 70 to 80% of children under 5 years of age had some degree of fever, and about 50% of these developed a slight macular rash. During the following four and one-half months, three of the vaccinated group developed measles, compared with 32 among the controls. In addition, 388 persons were vaccinated with canine dis