Opinions vary as to the effect of measles on young children infected with active or presumably quiescent tuberculosis. Until recent years measles was always considered to be a menace to a tuberculous child, and was thought frequently to reactivate an apparently quiescent tuberculous process. At present there are several observers, such as Groer1 and Choffé,2 who believe that measles is not as harmful as it was previously supposed.
Nobécourt, Liège and Herr3 recently reported a clinical, roentgenologic and pathologic study of twenty children with tuberculosis that subsequently were infected with measles. Roentgenograms of the chest were made after the termination of the measles. They stated, "Tuberculosis has no effect on measles, but measles, in many cases, has an effect on tuberculosis." As little or nothing is known of the changes that occur in the chest of children with tuberculosis during and immediately after measles, it was our