background: ticks are hematophagous arthropod belonging to the class of arachnids. ticks are also one of the major vectors of pathogens to animal and human. this study was conducted to determine tick infestation rate of sheep in abdanan during 2007 – 2008. methods: sampling was performed seasonally in 19 villages during spring 2007 until winter 2008. a total of 1095 sheep were selected and test...

Ornithodoros turicata has been collected in Mexico and the United States. In the United States it is found in the states of Arizona, California, Colorado, Florida, Kansas, New Mexico, Oklahoma, Utah, and Texas. It is reported a vector of relapsing fever in Mexico, and in Kansas, New Mexico, Oklahoma, and Texas (Davis, 1942, Am. Assoc. Adv. Sci., 18, 67-76). In June, 1944, 121 Ornithodoros ticks...

Our study highlights the surveillance of Bartonella species among rodents and their associated ectoparasites (ticks, fleas, lice, and mites) in several regions across Thailand. A total of 619 rodents and 554 pooled ectoparasites (287 mite pools, 62 flea pools, 35 louse pools, and 170 tick pools) were collected from 8 provinces within 4 regions of Thailand. Bandicota indica (279), Rattus rattus ...

At first Rickettsia conorii was implicated as the causative agent of spotted fever in Uruguay diagnosed by serological assays. Later Rickettsia parkeri was detected in human-biting Amblyomma triste ticks using molecular tests. The natural vector of R. conorii, Rhipicephalus sanguineus, has not been studied for the presence of rickettsial organisms in Uruguay. To address this question, 180 R. sa...

Besides mosquitoes, ticks are regarded as the primary source of vector-borne infectious diseases. Indeed, a wide variety of severe infectious human diseases, including those involving viruses, are transmitted by ticks in many parts of the world. To date, there are no published reports on the use of next-generation sequencing for studying viral diversity in ticks or discovering new viruses in th...

This study investigated rickettsial infection in Amblyomma auricularium ticks from the state of Pernambuco, northeastern Brazil. An engorged female of A. auricularium collected from a skunk (Conepatus semistriatus) was sent alive to the laboratory, where the female was found through molecular analysis to be infected by Rickettsia amblyommii. This engorged female oviposited, and its offspring wa...

Rocky Mountain spotted fever (RMSF) is the most common tick-borne illness in Tennessee. Little is known about the occurrence of R. rickettsii, the causative agent, in ticks in Tennessee. To better understand the prevalence and distribution of rickettsial agents in ticks, we tested 1,265 Amblyomma, Dermacentor, and Ixodes adult and nymphal ticks. Additionally, we tested 231 Amblyomma americanum ...

We screened 768 tick pools containing 6,962 ticks from Khammouan Province, Laos, by using quantitative real-time PCR and identified Rickettsia spp., Ehrlichia spp., and Borrelia spp. Sequencing of Rickettsia spp.-positive and Borrelia spp.-positive pools provided evidence for distinct genotypes. Our results identified bacteria with human disease potential in ticks in Laos.

Tick-borne encephalitis virus (TBEV) is the etiologic agent of tick-borne (TBE) and transmitted by Ixodes ricinus (Linnaeus, 1758) in Europe. The geographical distribution I. Palearctic region covers also northern Africa, including northwestern Tunisia. While eco-epidemiology TBE Europe well documented, no data concerning TBEV from Africa are available. We investigated whether circulating A tot...