Crimean-Congo Hemorrhagic Fever in the One-Humped Camel (Camelus dromedarius) in East and Northeast of Iran
AbstractBackground: This comprehensive study was conducted on multi-purpose one-humped camel (Camelus dromedarius) sera and ticks to assess the epidemiological aspects of the Crimean-Congo hemorrhagic fever virus (CCHFV) in northeast Iran.Methods: From May 2012 to January 2013, eleven cities were randomly selected in the Khorasan Provinces of Iran as “clusters,” and at least 14 one-humped camels were sampled from each area. Reverse transcriptase polymerase chain reaction was used for the detection of the CCHFV genome in ticks. Sera were analyzed using specific enzyme-linked immunosorbent assay tests.Results: Four hundred and eighty ixodid ticks were collected, and the genome of the CCHFV was detected in 49 (10.2%) out of 480 ticks. The CCHFV genome was detected in two out of four tick species, and in tick samples from three cities in Khorassan-e-Jonoobi. All three provinces, and six out of eleven cities, were CCHFV-specific IgG-positive. In total, nine (5.3%) out of 170 one-humped camels were IgG-positive. The highest rate of IgG-positive samples was found in Nehbandan (16.67%).Conclusion: Continued surveillance and strictly enforced importation and quarantine practices should be implemented to prevent human exposure and the on-going dispersal of infected ticks and livestock in these regions. It is recommended that acaricides be used to prevent CCHF transmission to humans, and to reduce the tick population. In addition, care should be taken by abattoirs workers and people who work with one-humped camels.
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