Measles is generally considered a trivial disease. Yet 7,712 persons died in the U. S. during 1920 as a result of measles. The cause of the disease is unknown. It is particularly common and severe in schools, asylums, foundling homes. For years medical investigators have been attempting to find some method of protection, comparable to the protection now afforded for smallpox, typhoid, diphtheria. In 1916, C. Nicolle and E. Conseil of the Pasteur Institute in Tunis used the serum obtained from a patient convalescing from measles to secure protection against the disease. Last...
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