During the past year, Milwaukee has experienced an extensive epidemic of measles. The total number of reported cases was 15,001 for the epidemic year (1931-1932), during which time we recognized most of our cases of encephalitis. During the months that the epidemic assumed its greatest proportions, the cases complicated with encephalitis increased proportionately in number. The patients for whom hospitalization was requested were admitted to the South View Hospital or to the Milwaukee Children's Hospital. In a collaboration of the records of the two institutions, we are able to present briefly the report of thirteen cases of encephalitis complicating measles, and the necropsy report on three of these. This series includes the largest number of cases observed during one year (one epidemic).
Neal and Applebaum1 suggested that the recent increasing incidence may be due to greater interest in this condition. The great majority of cases have been reported in