Ancestral Origin and Dissemination Dynamics of Reemerging Toxigenic Vibrio cholerae, Haiti.

Ancestral Origin and Dissemination Dynamics of Reemerging Toxigenic Vibrio cholerae, Haiti.
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DOI:
10.3201/eid2910.230554
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发表时间:
2023-10
影响因子:
11.8
通讯作者:
Ali, Afsar
Ali, Afsar
中科院分区:
医学2区
文献类型:
--
作者:
Mavian, Carla N.;Tagliamonte, Massimiliano S.;Alam, Meer T.;Sakib, S. Nazmus;Cash, Melanie N.;Moir, Monika;Jimenez, Juan Perez;Riva, Alberto;Nelson, Eric J.;Cato, Emilie T.;Ajayakumar, Jayakrishnan;Louis, Rigan;Curtis, Andrew;De Rochars, V. Madsen Beau;Rouzier, Vanessa;Pape, Jean William;De Oliveira, Tulio;Morris, J. Glenn, Jr.;Salemi, Marco;Ali, Afsar

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海地2010年的霍乱疫情被认为已于2019年结束,海地总理于2022年2月宣布该国消除霍乱。2022年9月25日,太子港再次发现霍乱病例。我们将 2022 年 42 种临床霍乱弧菌菌株的基因组数据与来自海地的 327 种其他菌株和全球收集的 1,824 种菌株的数据进行了比较。 2022 年分离株具有同质性,与 2012 年至 2019 年海地流行的临床和环境菌株密切相关。贝叶斯假设检验表明,2022 年临床分离株与 2018 年 7 月在海地流行的环境谱系具有最近的共同祖先。我们的研究结果强烈表明,产毒霍乱弧菌 O1 可以在水生环境水库中持续存在多年,并引发新的疫情爆发。这些结果凸显了迫切需要改善公共卫生基础设施和可能的定期疫苗接种活动,以维持人群对霍乱弧菌的免疫力。
The 2010 cholera epidemic in Haiti was thought to have ended in 2019, and the Prime Minister of Haiti declared the country cholera-free in February 2022. On September 25, 2022, cholera cases were again identified in Port-au-Prince. We compared genomic data from 42 clinical Vibrio cholerae strains from 2022 with data from 327 other strains from Haiti and 1,824 strains collected worldwide. The 2022 isolates were homogeneous and closely related to clinical and environmental strains circulating in Haiti during 2012–2019. Bayesian hypothesis testing indicated that the 2022 clinical isolates shared their most recent common ancestor with an environmental lineage circulating in Haiti in July 2018. Our findings strongly suggest that toxigenic V. cholerae O1 can persist for years in aquatic environmental reservoirs and ignite new outbreaks. These results highlight the urgent need for improved public health infrastructure and possible periodic vaccination campaigns to maintain population immunity against V. cholerae.
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