Epidemics of jaundice have occurred among troops in the armies of many nations in the past. The French have referred to the disease as the "jaundice of camps," and the English have often called it the "jaundice of campaigns." Outbreaks of jaundice in civilian communities in this country and abroad have been well described. Jaundice of the usual so-called catarrhal type occurs frequently among troops of our armed forces. Such outbreaks are characterized by an incubation period of twenty to thirty days or less and a spread by contact.
The occurrence of large numbers of soldiers with jaundice at widely separated locations here and abroad, early in 1942, had certain characteristics differing from the well known infectious or catarrhal jaundice. Of special interest was the fact that the outbreaks were invariably associated with administration of certain lots of yellow fever vaccine. Noteworthy were the observations that incidences were reported simultaneously