Asadollahi Zoj, Sahar (2020) Epidemiology & molecular detection of Crimean-Congo hemorrhagic fever (CCHF), Coxiella burnetii and Anaplasma spp. in hard ticks (Ixodidae) in the Sistan regions. Doctoral thesis, University of Zabol.
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Epidemiology & molecular detection of Crimean-Congo hemorrhagic fever (CCHF), Coxiella burnetii and Anaplasma spp. in hard ticks (Ixodidae) in the Sistan regions..pdf Download (81kB) | Preview |
Abstract
Tick are globally distributed with a great medical and veterinary importance due to their damage to reptile, bird and mammalian hosts. In this study, 220 livestock including 150 sheep, 50 goats, 20 cattle were sampled in five counties of Sistan region (Zabol, Zahak, Hirmand, Nimruz and Hamun). Species were diagnosed based on valid morphological keys under a stereomicroscopic. In terms of diversity two genera and four species were detected including 242 Rhipicephalus (40.6%) and 354 Hyalomma (59.4%) and species were 238 Rhipicephalus sanguineus (40.1%), 3 Rhipicephalus nymphs (0.5%), 283 Hyalomma anatolicum (47.5%), 9 other Hyalomma (1.5%), 62 Hyalomma nymphs (10.4%) and one Rhipicephalus (Boophilus) annulatus (0.16%). After preparing of comercial kits and materials needed for the tests molecular studies have shown that the genomes of Crimean Congo hemorrhagic fever virus and Coxiella burnetii are not present in tested ticks. However, a significant percentage (20%) of the infection with Anaplasma species was confirmed. All infected ticks belonged to two hosts (sheep and goats) and were caught from Zabol and Zahak counties. Also, the age of infected hosts was mainly in the range of 1-3 years. Hyalomma anatolicum is the dominant species of Sistan region. It has been proven that Sistan is one of the endemic areas for Crimean Congo fever, but the results indicate no presence of viral genomes in tick carriers in this province. It seems that more studies are needed in this area for a more accurate point of view. The high prevalence of anaplasmosis also emphasizes the importance of preventive health policies and the elimination of tick carriers. Since the genome of the bacterium that causes Q fever has not been confirmed in ticks, the study area can be considered clean in terms of Coxiella burnetii.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | Hard ticks, Crimean Congo hemorrhagic fever, Coxiella burnetii, Anaplasma, Sistan |
| Subjects: | Q Science > QL Zoology |
| Depositing User: | Mrs najmeh khajeh |
| Date Deposited: | 19 Oct 2021 07:01 |
| Last Modified: | 19 Oct 2021 07:01 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/2788 |
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