. Cooperative economic insect report. Insect pests Control United States Periodicals. - 461 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period April 25 - May 1, a total of 3 screw-worm cases was reported in the Southwestern Eradication Area; one case each in Jim Hogg, Brooks and Edwards Counties, TEXAS. Four cases were reported in Cochise County and one case in Santa Cruz County, ARIZONA. The Republic of Mexico reported 118 cases: Sonora 66, Chihuahua 5, Coahuila 4, Nuevo Leon 1, Tamaulipas 17, Durango 16, Veracruz 6, San Luis Potosi 2, Zacatecas 1. Sterile
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 461 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period April 25 - May 1, a total of 3 screw-worm cases was reported in the Southwestern Eradication Area; one case each in Jim Hogg, Brooks and Edwards Counties, TEXAS. Four cases were reported in Cochise County and one case in Santa Cruz County, ARIZONA. The Republic of Mexico reported 118 cases: Sonora 66, Chihuahua 5, Coahuila 4, Nuevo Leon 1, Tamaulipas 17, Durango 16, Veracruz 6, San Luis Potosi 2, Zacatecas 1. Sterile screw-worm flies released during the period: Texas 5,306,250, Arizona 1,200,000, Mexico 71,190,000. Ratio of Positive Cases Positive Cases Negative Cases to 100 Cases Negative Year Current Cumulative Current Cumulative Current Cumulative Table 1. Comparison of specimens reported during corresponding weeks in 1963 and 1964 in Southwestern Eradication Area. 1963 100 650 316 2,137 1964 7 37 401 2,272 1965 3 23 228 1,498 Table 2. Comparison of specimens reported during corresponding weeks and in a corresponding area in 1964 in the United States-Mexico Barrier Zone.* 1964 28 286 91 515 1965 96 898 56 599 Table 2A. Mexican portion of Barrier Zone only. 1964 26 258 12 128 1965 93 879 36 325 * Barrier Zone - Area in which screw-worm eradication operations are being carried out in an effort to prevent establishment of self-sustaining screw- worm population in the United States. (Anim. Dis. Erad. Div.).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Branch; United States. Plant Pest Control Division; United States. Animal and Plant Health I
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