Kissing Bugs Harboring Trypanosoma cruzi, Frequently Bite Residents of the US Southwest But Do Not Cause Chagas Disease
| Autor: | Justin O. Schmidt, Patricia L. Dorn, Stephen A. Klotz, Maria Love, Nafees Ahmad, Shannon Smith, Nicole Behrens-Bradley, Norman Beatty |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Chagas disease
Adult Male Adolescent Trypanosoma cruzi Protracta Serological evidence 030204 cardiovascular system & hematology Triatoma rubida Serology 03 medical and health sciences Young Adult 0302 clinical medicine parasitic diseases Hypersensitivity Medicine Animals Humans Chagas Disease 030212 general & internal medicine Triatoma Anaphylaxis Aged Aged 80 and over biology business.industry fungi Arizona Insect Bites and Stings General Medicine Middle Aged biology.organism_classification medicine.disease United States Insect Vectors Vector (epidemiology) Enzootic Female business Demography |
| Zdroj: | The American journal of medicine. 133(1) |
| ISSN: | 1555-7162 |
| Popis: | Background Kissing bugs are common household pests in the Desert Southwest of the United States. These hematophagous bugs enter homes and suck blood from resident humans and pets. They are vectors of Trypanosoma cruzi, an enzootic parasite in small mammals and the cause of Chagas disease in humans. Autochthonous cases of Chagas disease are rare in the United States despite the presence of the vector and parasite. Environmental and biological factors accounting for this phenomenon need studying. Methods Homeowners in Bisbee and Tucson, Arizona captured kissing bugs inside homes during 2017-2018. Bugs were tested for presence of T. cruzi by polymerase chain reaction. Residents bitten by kissing bugs were tested for Chagas disease by serology. We evaluated invaded homes in the 2 cities. Results Three species of kissing bugs (n = 521) were collected in or near homes. Triatoma rubida was the most common triatomine in Tucson; T. recurva in Bisbee. T. protracta was uncommon. Seventeen percent of bugs captured in Bisbee and 51.1% in Tucson harbored T. cruzi. Bite victims (n = 105) recalled more than 2200 bites. Reactions to bites were common, including 32 episodes of anaphylaxis in 11 people (10.5%). Tests for Chagas disease (n = 116) were negative. Median age of houses was 91 years in Bisbee and 7 years in Tucson. Bisbee houses had pier and beam foundations. Tucson houses were built on concrete slabs. Conclusions Kissing bugs harboring T. cruzi readily entered new and old homes. Bites of humans caused severe, life-threatening reactions. There was no serological evidence of Chagas disease among those bitten. |
| Databáze: | OpenAIRE |
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