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Article
August 9, 1952

MEDICAL NEWS

JAMA. 1952;149(15):1403-1406. doi:10.1001/jama.1952.02930320043015
Abstract

CALIFORNIA 

Warning—Epidemic Encephalitis.—  Dr. Wilton L. Halverson, state director of public health, has issued a warning that encephalitis may become epidemic in the Central Valley of California this year unless intensified action against the mosquito that transmits the disease is taken by control agencies and individual householders alike. The threat of a mosquito-borne epidemic is indicated in reports of both human and equine cases of encephalitis in the San Joaquin Valley, coupled with the appearance of extremely large numbers of Culex tarsalis mosquitoes.At a meeting of representatives of the vector control advisory committee, State Department of Public Health, and representatives of mosquito abatement districts in the Central Valley, preventive and remedial measures were suggested. Individual householders were urged to eliminate mosquito breeding sources around their premises, keep adult mosquitoes out of the house by careful screening of doors and windows, and use hand sprays or aerosol bombs to kill

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