E-ISSN 2218-6050 | ISSN 2226-4485
 

Original Article


Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro.


Abstract
Murine typhus is a rickettsiosis caused by Rickettsia typhi, whose transmission is carried out by rat fleas in urban settlements as classically known, but it also has been related to cat fleas in a sub-urban alternative cycle that has been suggested by recent reports. These studies remarks that in addition to rats, other animals like cats, opossums and dogs could be implied in the transmission of Rickettsia typhi as infected fleas obtained from serologically positive animals have been detected in samples from endemic areas. In Mexico, the higher number of murine typhus cases have been detected in the Yucatan peninsula, which includes a great southeastern region of Mexico that shows ecologic characteristics similar to the sub-urban alternative cycle recently described in Texas and California at the United States. To find out which are the particular ecologic characteristics of murine typhus transmission in this region, we analyzed blood and Rhipicephalus sanguineus ticks obtained from domestic dogs by molecular approaches, demonstrating that both samples were infected by Rickettsia typhy. Following this, we obtained isolates that were analyzed by genetic sequencing to corroborate this infection in 100% of the analyzed samples. This evidence suggests for the first time that ticks and dogs could be actively participating in the transmission of murine typhus, in a role that requires further studies for its precise description.

Key words: Murine typhus, Rickettsia typhi, Rhipicephalus sanguineus, dogs, vector.


 
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How to Cite this Article
Pubmed Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro. Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. Open Vet J. 2017; 7(2): 165-169. doi:10.4314/ovj.v7i2.14


Web Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro. Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. https://www.openveterinaryjournal.com/?mno=250125 [Access: June 04, 2024]. doi:10.4314/ovj.v7i2.14


AMA (American Medical Association) Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro. Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. Open Vet J. 2017; 7(2): 165-169. doi:10.4314/ovj.v7i2.14



Vancouver/ICMJE Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro. Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. Open Vet J. (2017), [cited June 04, 2024]; 7(2): 165-169. doi:10.4314/ovj.v7i2.14



Harvard Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro (2017) Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. Open Vet J, 7 (2), 165-169. doi:10.4314/ovj.v7i2.14



Turabian Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro. 2017. Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. Open Veterinary Journal, 7 (2), 165-169. doi:10.4314/ovj.v7i2.14



Chicago Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro. "Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts." Open Veterinary Journal 7 (2017), 165-169. doi:10.4314/ovj.v7i2.14



MLA (The Modern Language Association) Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro. "Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts." Open Veterinary Journal 7.2 (2017), 165-169. Print. doi:10.4314/ovj.v7i2.14



APA (American Psychological Association) Style

Karla Dzul-Rosado, Cesar Lugo-Caballero, Raul Tello-Martin, Karina López-Avila, Jorge Zavala-Castro (2017) Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. Open Veterinary Journal, 7 (2), 165-169. doi:10.4314/ovj.v7i2.14