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Emergent chikungunya fever and vertical transmission in Yunnan Province, China, 2019

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Abstract

During the dengue epidemic in Yunnan Province, China, during 2019, a concurrent outbreak of chikungunya occurred in the city of Ruili, which is located in the southwest of the province, adjacent to Myanmar. As part of this outbreak, three neonatal cases of infection with indigenous chikungunya virus from mother-to-child (vertical) transmission were observed. Isolates of chikungunya virus were obtained from 37 serum samples of patients with chikungunya during this outbreak, and a phylogenetic analysis of these isolates revealed that they belong to the Indian Ocean subclade of the East/Central/South African genotype. The E1 genes of these viruses did not harbor the A226V mutation.

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The data supporting this study's findings are available on request from the corresponding author.

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Acknowledgements

The study was fully supported by grants from the National Key Research and Development Program for the 13th Five-Year Plan from the Ministry of Science and Technology, China (2017YFD0501800), the Science and Technology Programs of Military, China (15QNP035), and a General Financial Grant (2015M582907) from the China Postdoctoral Science Foundation. We thank Katie Oakley, PhD, from Liwen Bianji, Edanz Editing China (www.liwenbianji.cn/ac), for editing the English text of a draft of this manuscript.

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Correspondence to Ting-Song Hu or Fu-Qiang Zhang.

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Yin, X., Hu, TS., Zhang, H. et al. Emergent chikungunya fever and vertical transmission in Yunnan Province, China, 2019. Arch Virol 166, 1455–1462 (2021). https://doi.org/10.1007/s00705-021-05005-1

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  • DOI: https://doi.org/10.1007/s00705-021-05005-1

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