. Cooperative economic insect report. Insect pests Control United States Periodicals. - 885 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period July 19-25, one screw-worm infestation was confirmed in Nueces County, TEXAS; 3 cases were reported in NEW MEXICO, one each in Grant, Socorro and Lincoln Counties. ARIZONA reported 6 cases. Two each from Pima, Gila and Graham Counties. All cases reported from outside of fly-release area. The Republic of Mexico reported 93 cases from the States of Sonora (10), Durango (17), Coahuila (3), Chihuahua (33), Nuevo Leon (8)
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 885 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period July 19-25, one screw-worm infestation was confirmed in Nueces County, TEXAS; 3 cases were reported in NEW MEXICO, one each in Grant, Socorro and Lincoln Counties. ARIZONA reported 6 cases. Two each from Pima, Gila and Graham Counties. All cases reported from outside of fly-release area. The Republic of Mexico reported 93 cases from the States of Sonora (10), Durango (17), Coahuila (3), Chihuahua (33), Nuevo Leon (8), Tamaulipas (9), San Luis Potosi (3) and Veracruz (1 ). Total of 117,273,850 sterile flies was released: 29,251,050 in Texas, 2,138,000 in New Mexico, 4,858,000 in Arizona and 81,026,800 in Mexico. The following is a comparison of specimens reported during corres- ponding weeks in 1962 and 1963. Ratio of Cases Positive Cases Negative Cases* Positive to Negative** Year Current Cumulative Current Cumulative Current Cumulative 1962 2,289 27,339 52 2,070 4, :100 1, :100 1963 91 2,230 77 4,347 :100 :100 1964 4 101 47 3,982 :100 :100 * The number of cases not screw-worm is an index of the efficiency of the reporting system. ** A comparison of the ratios of screw-worm cases to cases that are not screw- worm is an index of the change in number of screw-worm cases. (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 Inspection Service. Plant Protection and Quarantine Programs. Washington, D. C. : U. S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology a
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