Journal
VETERINARY SCIENCES
Volume 9, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/vetsci9070343
Keywords
Rickettsia hoogstraalii; Romania; SFG Rickettsia spp; diversity; ticks
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Funding
- CNCS-UEFISCDI [PD34/2018, PCCDI 57/2018]
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This study evaluated the diversity of spotted fever Rickettsiae in ticks collected in Romania. Five Rickettsia species were identified through PCR amplification and DNA sequence analysis. The findings of this study provide further insights into tick-borne diseases in Romania.
Tickborne bacterial pathogens have been described worldwide as risk factors for both animal and human health. Spotted fevers caused by Rickettsiae may cause non-specific symptoms, which make clinical diagnosis difficult. The aim of the current study was to evaluate and review the diversity of SFG Rickettsiae in ticks collected in 41 counties in Romania. A total of 2028 questing and engorged ticks collected in Romania belonging to five species were tested by PCR amplification of Rickettsia spp. gltA and 17-D gene fragments: Ixodes ricinus (n = 1128), Dermacentor marginatus (n = 507), D. reticulatus (n = 165), Rhipicephalus rossicus (n = 128) and Haemaphysalis punctata (n = 100). Five Rickettsia species were identified following DNA sequence analysis: R. helvetica, R. monacensis, R. slovaca, R. raoultii, and R. hoogstraalii. The most common species detected was R. monacensis. Moreover, R. hoogstraalii was detected for the first time in Romania and in R. rossicus ticks. The detection of R. raoultii and R. monacensis in questing larvae of Hae. punctata suggests the possible transovarial transmission of these Rickettsia species in ticks. The detection of R. hoogstraalii for the first time in Romania increases the reported SFG Rickettsia diversity in the country.
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