2016
DOI: 10.1590/s1678-9946201658032 View full text |Buy / Rent full text
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Abstract: SUMMARYRickettsia felis is an emergent pathogen and the causative agent of a typhus-like rickettsiosis in the Americas. Its transmission cycle involves fleas as biological vectors (mainly Ctenocephalides felis) and multiple domestic and synanthropic mammal hosts. Nonetheless, the role of mammals in the cycle of R. felis is not well understood and many efforts are ongoing in different countries of America to clarify it. The present study describes for the first time in Mexico the infection of two species of opo… Show more

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“…This work represents the first record of R. typhi in fleas collected from opossums in an urban ecological Reserve in Mexico City, Mexico. Given the fact that there are records of Ct. felis felis and other flea species (Blanton et al., 2016) , associated with opossums infected with R. typhi in the southeast of United States, and that two opossums species were found to be infected in the Yucatan Peninsula (Panti‐May et al., 2015; Peniche‐Lara et al., 2016), our results support the necessity of a systematic entomological surveillance in fleas of D. virginiana throughout the entire distribution of this mammal species. Opossums could be carrying infected fleas along great distances; it has been reported that D. virginiana has a home range from about 650 m 2 up to 23 hectares (particularly in males) (Ceballos, 2014).…”
Section: Discussionsupporting
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“…This work represents the first record of R. typhi in fleas collected from opossums in an urban ecological Reserve in Mexico City, Mexico. Given the fact that there are records of Ct. felis felis and other flea species (Blanton et al., 2016) , associated with opossums infected with R. typhi in the southeast of United States, and that two opossums species were found to be infected in the Yucatan Peninsula (Panti‐May et al., 2015; Peniche‐Lara et al., 2016), our results support the necessity of a systematic entomological surveillance in fleas of D. virginiana throughout the entire distribution of this mammal species. Opossums could be carrying infected fleas along great distances; it has been reported that D. virginiana has a home range from about 650 m 2 up to 23 hectares (particularly in males) (Ceballos, 2014).…”
Section: Discussionsupporting
“…Didelphis virginiana is an abundant species that inhabits lowlands and hillock of deciduous forests, swamps and marshes from the sea level up to 3,000 m. It is also a resilient species, adapting to the change in land use and persisting in anthropized areas, such as farmlands and sub‐urban areas (Ceballos, 2014). Although several studies have demonstrated the presence of Rickettsia felis and R. typhi in Didelphis marsupialis and D. virginiana in the Yucatan Peninsula in Mexico, surveillance of these rickettsial agents has never been carried out in their fleas (Panti‐May et al., 2015; Peniche‐Lara et al., 2016). For this reason, the aim of this work was to detect the presence and diversity of Rickettsia sp.…”
Section: Introductionmentioning
“…Efforts to identify a vertebrate biological reservoir for R. felis have so far remained unresolved. While R. felis DNA has been detected in cat [ 8 ], dog [ 9 ] and opossum [ 10 ] blood, successful culture of the organism from mammalian blood has yet to be achieved. In C. felis , R. felis is maintained for up to 12 generations in the absence of a blood meal [ 11 ].…”
Section: Introductionmentioning
“…R. akari, a well characterized member of the spotted fever group Rickettsia is the ethiologic agent of rickettsialpox, a benign zoonotic illness which has similar clinical manifestation like that of murine typhus. R. akari has been reported to be very common in metropolitan cities of eastern United States, Argentina, Eastern European countries like Turkey, Croatia, Ukraine, Russia, Mexico, and Asia where they have been severally reported [16][17][18][19][20][21][22][23][24][25][26][27]. To the best of our knowledge, the presence of R. akari and its closest relatives R. felis and R. australis has not been reported anywhere in the African continent.…”
Section: Discussionmentioning