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19 October 2021 High Prevalence of Rickettsia bellii in Mosquitoes From Eastern China
Feng Li, Junhua Tian, Lin Wang, Zhengpei Yang, Miao Lu, Xincheng Qin, Hongqing Zhao, Jintao Chen, Kun Li
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Abstract

Mosquitoes are the most important vectors carrying significant numbers of human pathogens. Recent studies implicated that mosquitoes play an important role in circulation and transmission of multiple Rickettsia species. In this study, Rickettsia bellii was identified in four mosquito species (Culex pipiens, C. tritaeniorhynchus, Aedes albopictus, and Anopheles sinensis) collected from three Eastern China provinces during 2019–2020. Rickettsia bellii was detected in 37.50 and 26.32% of the C. pipiens pools from Beijing and Jiangsu province, respectively. In C. tritaeniorhynchus and An. sinensis from Shandong, the infection rate is 20.00 and 6.25%, respectively. Additionally, three Ae. albopictus pools (3/42, 7.14%) from Beijing were also detected positive for R. bellii. Genetic and phylogenetic analysis on 16S, gltA, and groEL genes indicates that sequences from all these strains are highly homologous and closely related to other R. bellii strains. This is the first report that Ae. albopictus and C. tritaeniorhynchus harbor R. bellii. The wide host range and high infection rate in certain areas may dramatically increase the exposure of R. bellii to human and other vertebrates. The role of mosquitoes in transmission of rickettsiosis and its potential risk to public health should be further considered.

© The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Feng Li, Junhua Tian, Lin Wang, Zhengpei Yang, Miao Lu, Xincheng Qin, Hongqing Zhao, Jintao Chen, and Kun Li "High Prevalence of Rickettsia bellii in Mosquitoes From Eastern China," Journal of Medical Entomology 59(1), 390-393, (19 October 2021). https://doi.org/10.1093/jme/tjab177
Received: 28 July 2021; Accepted: 30 September 2021; Published: 19 October 2021
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KEYWORDS
Ae. albopictus
C. tritaeniorhynchus
eastern China
mosquitoe
R. bellii
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