Triatoma (Hemiptera: Reduviidae) Infected with Trypanosoma cruzi in South Texas Wood Rat Dens

Prehistoric earth oven facilities and the pathoecology of Chagas disease in the Lower Pecos Canyonlands

“…In Texas, there are seven Triatoma species that are naturally infected with T. cruzi. These are Triatoma gerstaeckeri, Triatoma indictiva, Triatoma lecticularius (synonym Triatoma heidemanni), Triatoma neotomae, Triatoma protracta, Triatoma rubida, and Triatoma sanguisuga (Elkins, 1951a(Elkins, , 1951bEads et al, 1963;Lent and Wygodzinsky, 1979). All seven Texas species are naturally infected with T. cruzi and are vectors of Chagas disease (Davis et al, 1943;DeShazo, 1943;Pippin et al, 1968;Sullivan et al, 1949;Wood, 1941aWood, , 1941b.…”

A case of megacolon in Rio Grande Valley as a possible case of Chagas disease

“…It has been pointed out that this is probably due to North American trypanosomes being less virulent than South American strains (Schofield et al 1987 (Elkins 1951b, Eads et al 1963. Regardless, all seven Texas species have be reported to be naturally infected with T. cruzi (Wood 1941a,b, Davis et al 1943, DeShazo 1943, Sullivan et al 1949, Elkins 1951a, Pippin et al 1968) and all are considered potential vectors of Chagas disease.…”

“…In the Rio Grande Valley, four separate studies conducted between 1941 and 1980 (Wood 1941, Sullivan et al 1949, Eads et al 1963, Burkholder et al 1980) have shown T. cruzi to be enzootic in five species of conenose bugs. Between the four studies, a combined total of 861 triatomines were tested for the protozoa with 21.4% positive.…”

Genetic Variation of North American Triatomines (Insecta: Hemiptera: Reduviidae): Initial Divergence between Species and Populations of Chagas Disease Vector

“…14 In some of these states, this species was associated with human houses and T. cruzi infections rates of 0% to 63%. 10,[15][16][17][18] Triatoma recurva has been reported in the states of Baja California, Baja California Sur, Chihuahua, Guerrero, Nayarit, Sinaloa and Sonora, and a high level of T. cruzi infection greater than 90%, 1,19 and has been reported in the United States in Arizona. Triatoma protracta has been reported in the states of Baja California Norte, Chihuahua, Coahuila, Durango, Nuevo Leon, Tamaulipas, Sinaloa, Sonora, San Luis Potosi, and Zacatecas and in several states in the southwestern United States (Arizona, California, Nevada, Texas, New Mexico, and Utah), with T. cruzi infections less than 19%.…”