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In the article on "Encephalitis in the Yakima Valley, Mixed St. Louis and Western Equine Types," in The Journal, July 19, on page 163, second column, twenty-one lines from the top, this sentence occurs: "This finding is similar to that pointed out by Leake, Musson and Chope9 and by Jones and Bozalis10 relative to the St. Louis outbreak, and interpreted by them as incriminating certain Culex mosquitoes." The author, Dr. William M. Hammon, writes that these references are incorrect. The references intended were to Lumsden, L. L.: Observations of the Epidemiological Features of Epidemic Encephalitis Lethargica, Curricula in Public Health, Public Health 416a. University of California (from unpublished official report), and Casey, A. E., and Broun, G. O.: Epidemiology of St. Louis Encephalitis, Science88:450 (Nov. 11) 1938. Leake, Musson and Chope concluded that transmission was probably by contact, and the paper by Jones and Bozalis is
Encephalitis in the Yakima Valley. JAMA. 1941;117(9):802. doi:10.1001/jama.1941.02820350142018
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