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February 22, 1947


JAMA. 1947;133(8):559-560. doi:10.1001/jama.1947.02880080051015

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PACIFIC MOSQUITOES REACH THIS COUNTRY IN TIRES  In a routine Public Health Service quarantine inspection of a cargo ship arriving at Los Angeles from New Guinea, a sanitary inspector discovered that mosquitoes had been breeding in fresh water contained in about half of the nearly 9,000 tires which were being returned to the United States from combat areas. The tires contained water varying in amount from one cup to five gallons per tire and it was estimated that the average tire examined containing water contained also from twenty to thirty larvae. Some of the mosquitoes were the kind that carry dengue fever and filariasis in their native Pacific Islands. The ship before docking was thoroughly sprayed with freonpyrethrum aerosol, and later many dead adult mosquitoes were found. In eleven subsequent shipments of tires water was found in eight and mosquitoes were found breeding in three of the

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