Distribution and Occurrence of Amblyomma maculatum sensu lato (Acari: Ixodidae) and Rickettsia parkeri (Rickettsiales: Rickettsiaceae), Arizona and New Mexico, 2017–2019

Amblyomma maculatum Koch sensu lato (s.l.) ticks are the vector of Rickettsia parkeri in Arizona, where nine cases of R. parkeri rickettsiosis have been identified since the initial case in 2014. The current study sought to better define the geographic ranges of the vector and pathogen and to assess...

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Published inJournal of medical entomology Vol. 57; no. 6; pp. 2030 - 2034
Main Authors Hecht, Joy A., Allerdice, Michelle E. J., Karpathy, Sandor E., Yaglom, Hayley D., Casal, Mariana, Lash, R. Ryan, la Mora, Jesus Delgado-de, Licona-Enriquez, Jesus D., la Mora, David Delgado-de, Groschupf, Kathleen, Mertins, James W., Moors, Amanda, Swann, Don E., Paddock, Christopher D.
Format Journal Article
LanguageEnglish
Published US Entomological Society of America 13.11.2020
Oxford University Press
Subjects
Amblyomma - microbiology
Amblyomma - physiology
Amblyomma maculatum
Animal Distribution
Animals
Arizona
Deoxyribonucleic acid
DNA
Female
Health risks
Male
New Mexico
Public health
Rickettsia - isolation & purification
Rickettsia parkeri
Rickettsiosis
SHORT COMMUNICATION
tick-borne disease
Ticks
New Mexico
Arizona
United States > US
New Mexico
Arizona
tick-borne disease
Rickettsia parkeri
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Summary:Amblyomma maculatum Koch sensu lato (s.l.) ticks are the vector of Rickettsia parkeri in Arizona, where nine cases of R. parkeri rickettsiosis have been identified since the initial case in 2014. The current study sought to better define the geographic ranges of the vector and pathogen and to assess the potential public health risk posed by R. parkeri in this region of the southwestern United States. A total of 275 A. maculatum s.l. ticks were collected from 34 locations in four counties in Arizona and one county in New Mexico and screened for DNA of Rickettsia species. Rickettsia parkeri was detected in 20.4% of the ticks, including one specimen collected from New Mexico, the first report of R. parkeri in A. maculatum s.l. from this state.This work demonstrates a broader distribution of A. maculatum s.l. ticks and R. parkeri in the southwestern United States than appreciated previously to suggest that R. parkeri rickettsiosis is underrecognized in this region.
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ISSN:0022-2585
1938-2928
DOI:10.1093/jme/tjaa130