Epidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China

Abstract This study aimed to investigate the epidemiological, clinical, and virologic characteristics of avian influenza A (H7N9) confirmed cases from two family clusters in Southeast China. Epidemiological data of the H7N9 confirmed cases and their close contacts were obtained through interviews an...

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Autores principales: Jianfeng Xie, Yuwei Weng, Jianming Ou, Lin Zhao, Yanhua Zhang, Jinzhang Wang, Wei Chen, Meng Huang, Wenqiong Xiu, Hongbin Chen, Yongjun Zhang, Binshan Wu, Wenxiang He, Ying Zhu, Libin You, Zhimiao Huang, Canming Zhang, Longtao Hong, Wei Wang, Kuicheng Zheng
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Publicado: Nature Portfolio 2017
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spelling oai:doaj.org-article:50250b338c7249a89408e52eb5edee312021-12-02T12:32:42ZEpidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China10.1038/s41598-017-01761-w2045-2322https://doaj.org/article/50250b338c7249a89408e52eb5edee312017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01761-whttps://doaj.org/toc/2045-2322Abstract This study aimed to investigate the epidemiological, clinical, and virologic characteristics of avian influenza A (H7N9) confirmed cases from two family clusters in Southeast China. Epidemiological data of the H7N9 confirmed cases and their close contacts were obtained through interviews and reviews of medical records. Of the four patients in these two family clusters, two cases had mild symptoms, one had severe symptoms, and one died. Three of the four patients had a history of exposure to live poultry or contaminated environments. The complete genome sequences of the H7N9 viruses from the same family cluster were highly homologous, and the four isolated viruses from the two family clusters exhibited the virologic features of the H7N9 virus, in terms of transmissibility, pathogenicity, host adaptation, and antiviral drug resistance. In addition, our findings indicated that the A/Fujian/18/2015 viral strain contained an additional hemagglutinin G225D substitution, which preferentially binds α2,6-linked sialic acids. The results of this study demonstrate that one family cluster was infected through common exposure to live poultry or contaminated environments, and the other was more likely to be infected through the human-to-human route.Jianfeng XieYuwei WengJianming OuLin ZhaoYanhua ZhangJinzhang WangWei ChenMeng HuangWenqiong XiuHongbin ChenYongjun ZhangBinshan WuWenxiang HeYing ZhuLibin YouZhimiao HuangCanming ZhangLongtao HongWei WangKuicheng ZhengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Jianfeng Xie
Yuwei Weng
Jianming Ou
Lin Zhao
Yanhua Zhang
Jinzhang Wang
Wei Chen
Meng Huang
Wenqiong Xiu
Hongbin Chen
Yongjun Zhang
Binshan Wu
Wenxiang He
Ying Zhu
Libin You
Zhimiao Huang
Canming Zhang
Longtao Hong
Wei Wang
Kuicheng Zheng
Epidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China
description Abstract This study aimed to investigate the epidemiological, clinical, and virologic characteristics of avian influenza A (H7N9) confirmed cases from two family clusters in Southeast China. Epidemiological data of the H7N9 confirmed cases and their close contacts were obtained through interviews and reviews of medical records. Of the four patients in these two family clusters, two cases had mild symptoms, one had severe symptoms, and one died. Three of the four patients had a history of exposure to live poultry or contaminated environments. The complete genome sequences of the H7N9 viruses from the same family cluster were highly homologous, and the four isolated viruses from the two family clusters exhibited the virologic features of the H7N9 virus, in terms of transmissibility, pathogenicity, host adaptation, and antiviral drug resistance. In addition, our findings indicated that the A/Fujian/18/2015 viral strain contained an additional hemagglutinin G225D substitution, which preferentially binds α2,6-linked sialic acids. The results of this study demonstrate that one family cluster was infected through common exposure to live poultry or contaminated environments, and the other was more likely to be infected through the human-to-human route.
format article
author Jianfeng Xie
Yuwei Weng
Jianming Ou
Lin Zhao
Yanhua Zhang
Jinzhang Wang
Wei Chen
Meng Huang
Wenqiong Xiu
Hongbin Chen
Yongjun Zhang
Binshan Wu
Wenxiang He
Ying Zhu
Libin You
Zhimiao Huang
Canming Zhang
Longtao Hong
Wei Wang
Kuicheng Zheng
author_facet Jianfeng Xie
Yuwei Weng
Jianming Ou
Lin Zhao
Yanhua Zhang
Jinzhang Wang
Wei Chen
Meng Huang
Wenqiong Xiu
Hongbin Chen
Yongjun Zhang
Binshan Wu
Wenxiang He
Ying Zhu
Libin You
Zhimiao Huang
Canming Zhang
Longtao Hong
Wei Wang
Kuicheng Zheng
author_sort Jianfeng Xie
title Epidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China
title_short Epidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China
title_full Epidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China
title_fullStr Epidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China
title_full_unstemmed Epidemiological, clinical, and virologic features of two family clusters of avian influenza A (H7N9) virus infections in Southeast China
title_sort epidemiological, clinical, and virologic features of two family clusters of avian influenza a (h7n9) virus infections in southeast china
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/50250b338c7249a89408e52eb5edee31
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