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Shumin Xie Weixin Jia Yicun Lin Kaixiang Xing Xingxing Ren Wenbao Qi Ming Liao 《Emerging infectious diseases》2015,21(9):1657-1660
Fourteen influenza A(H7N9) viruses were isolated from poultry or the environment in live poultry markets in Guangdong Province, China during 2014−2015. Phylogenetic analysis showed that all viruses were descended from viruses of the second wave of influenza A(H7N9) virus infections during 2013. These viruses can be divided into 2 branches. 相似文献
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Nijuan Xiang Fiona Havers Tao Chen Ying Song Wenxiao Tu Leilei Li Yang Cao Bo Liu Lei Zhou Ling Meng Zhiheng Hong Rui Wang Yan Niu Jianyi Yao Kaiju Liao Lianmei Jin Yanping Zhang Qun Li Marc-Alain Widdowson Zijian Feng 《Emerging infectious diseases》2013,19(11):1784-1790
In mainland China, most avian influenza A(H7N9) cases in the spring of 2013 were reported through the pneumonia of unknown etiology (PUE) surveillance system. To understand the role of possible underreporting and surveillance bias in assessing the epidemiology of subtype H7N9 cases and the effect of live-poultry market closures, we examined all PUE cases reported from 2004 through May 3, 2013. Historically, the PUE system was underused, reporting was inconsistent, and PUE reporting was biased toward A(H7N9)-affected provinces, with sparse data from unaffected provinces; however, we found no evidence that the older ages of persons with A(H7N9) resulted from surveillance bias. The absolute number and the proportion of PUE cases confirmed to be A(H7N9) declined after live-poultry market closures (p<0.001), indicating that market closures might have positively affected outbreak control. In China, PUE surveillance needs to be improved. 相似文献
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Peng Wu Hui Jiang Joseph T. Wu Enfu Chen Jianfeng He Hang Zhou Lan Wei Juan Yang Bingyi Yang Ying Qin Vicky J. Fang Ming Li Tim K. Tsang Jiandong Zheng Eric H. Y. Lau Yu Cao Chengliang Chai Haojie Zhong Zhongjie Li Gabriel M. Leung Luzhao Feng George F. Gao Benjamin J. Cowling Hongjie Yu 《Emerging infectious diseases》2014,20(11):1891-1894
Closure of live poultry markets was implemented in areas affected by the influenza virus A(H7N9) outbreak in China during winter, 2013–14. Our analysis showed that closing live poultry markets in the most affected cities of Guangdong and Zhejiang provinces was highly effective in reducing the risk for H7N9 infection in humans. 相似文献
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Samir Refaey Eduardo Azziz-Baumgartner Marwa Mohamed Amin Manal Fahim Katherine Roguski Hanaa Abu Elsood Abd Elaziz A. Danielle Iuliano Noha Salah Timothy M. Uyeki Steven Lindstrom Charles Todd Davis Alaa Eid Mohamed Genedy Amr Kandeel 《Emerging infectious diseases》2015,21(12):2171-2173
During November 2014–April 2015, a total of 165 case-patients with influenza virus A(H5N1) infection, including 6 clusters and 51 deaths, were identified in Egypt. Among infected persons, 99% reported poultry exposure: 19% to ill poultry and 35% to dead poultry. Only 1 person reported wearing personal protective equipment while working with poultry. 相似文献
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Mamoona Chaudhry Angélique Angot Hamad B. Rashid Giovanni Cattoli Manzoor Hussain Giulia Trovò Alessandra Drago Viviana Valastro Michael Thrusfield Sue Welburn Mark C. Eisler Ilaria Capua 《Emerging infectious diseases》2015,21(4):673-676
Phylogenetic analysis of influenza viruses collected during December 2009–February 2010 from chickens in live poultry retail shops in Lahore, Pakistan, showed influenza A(H9N2) lineage polymerase and nonstructural genes generate through inter- and intrasubtypic reassortments. Many amino acid signatures observed were characteristic of human isolates; hence, their circulation could enhance inter- or intrasubtypic reassortment. 相似文献
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Lizette O. Durand Patrick Glew Diane Gross Matthew Kasper Susan Trock Inkyu K. Kim Joseph S. Bresee Ruben Donis Timothy M. Uyeki Marc-Alain Widdowson Eduardo Azziz-Baumgartner 《Emerging infectious diseases》2015,21(2):202-208
Co-circulation of influenza A(H5N1) and seasonal influenza viruses among humans and animals could lead to co-infections, reassortment, and emergence of novel viruses with pandemic potential. We assessed the timing of subtype H5N1 outbreaks among poultry, human H5N1 cases, and human seasonal influenza in 8 countries that reported 97% of all human H5N1 cases and 90% of all poultry H5N1 outbreaks. In these countries, most outbreaks among poultry (7,001/11,331, 62%) and half of human cases (313/625, 50%) occurred during January–March. Human H5N1 cases occurred in 167 (45%) of 372 months during which outbreaks among poultry occurred, compared with 59 (10%) of 574 months that had no outbreaks among poultry. Human H5N1 cases also occurred in 59 (22%) of 267 months during seasonal influenza periods. To reduce risk for co-infection, surveillance and control of H5N1 should be enhanced during January–March, when H5N1 outbreaks typically occur and overlap with seasonal influenza virus circulation. 相似文献
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Amr Kandeel Serge Manoncourt Eman Abd el Kareem Abdel-Nasser Mohamed Ahmed Samir El-Refaie Hala Essmat Jeffrey Tjaden Cecilia C. de Mattos Kenneth C. Earhart Anthony A. Marfin Nasr El-Sayed 《Emerging infectious diseases》2010,16(7):1101-1107
During March 2006–March 2009, a total of 6,355 suspected cases of avian influenza (H5N1) were reported to the Ministry of Health in Egypt. Sixty-three (1%) patients had confirmed infections; 24 (38%) died. Risk factors for death included female sex, age >15 years, and receiving the first dose of oseltamivir >2 days after illness onset. All but 2 case-patients reported exposure to domestic poultry probably infected with avian influenza virus (H5N1). No cases of human-to-human transmission were found. Greatest risks for infection and death were reported among women >15 years of age, who accounted for 38% of infections and 83% of deaths. The lower case-fatality rate in Egypt could be caused by a less virulent virus clade. However, the lower mortality rate seems to be caused by the large number of infected children who were identified early, received prompt treatment, and had less severe clinical disease. 相似文献
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Cuiling Xu Fiona Havers Lijie Wang Tao Chen Jinghong Shi Dayan Wang Jing Yang Lei Yang Marc-Alain Widdowson Yuelong Shu 《Emerging infectious diseases》2013,19(8):1289-1292
In China during March 4–April 28, 2013, avian influenza A(H7N9) virus testing was performed on 20,739 specimens from patients with influenza-like illness in 10 provinces with confirmed human cases: 6 (0.03%) were positive, and increased numbers of unsubtypeable influenza-positive specimens were not seen. Careful monitoring and rapid characterization of influenza A(H7N9) and other influenza viruses remain critical. 相似文献
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Peng Yang Xinghuo Pang Ying Deng Chunna Ma Daitao Zhang Ying Sun Weixian Shi Guilan Lu Jiachen Zhao Yimeng Liu Xiaomin Peng Yi Tian Haikun Qian Lijuan Chen Quanyi Wang 《Emerging infectious diseases》2013,19(12):2041-2043
During surveillance for pneumonia of unknown etiology and sentinel hospital–based surveillance in Beijing, China, we detected avian influenza A(H7N9) virus infection in 4 persons who had pneumonia, influenza-like illness, or asymptomatic infections. Samples from poultry workers, associated poultry environments, and wild birds suggest that this virus might not be present in Beijing. 相似文献
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Shuihua Lu Yufang Zheng Tao Li Yunwen Hu Xinian Liu Xiuhong Xi Qingguo Chen Qingle Wang Ye Cao Yanbing Wang Lijun Zhou Douglas Lowrie Jing Bao 《Emerging infectious diseases》2013,19(7)
A novel strain of influenza A(H7N9) virus has emerged in China and is causing mild to severe clinical symptoms in infected humans. Some case-patients have died. To further knowledge of this virus, we report the characteristics and clinical histories of 4 early case-patients. 相似文献
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Simona Puzelli Giada Rossini Marzia Facchini Gabriele Vaccari Livia Di Trani Angela Di Martino Paolo Gaibani Caterina Vocale Giovanni Cattoli Michael Bennett John W. McCauley Giovanni Rezza Maria Luisa Moro Roberto Rangoni Alba Carola Finarelli Maria Paola Landini Maria Rita Castrucci Isabella Donatelli the Influenza Task Force 《Emerging infectious diseases》2014,20(10):1745-1749
During an influenza A(H7N7) virus outbreak among poultry in Italy during August–September 2013, infection with a highly pathogenic A(H7N7) avian influenza virus was diagnosed for 3 poultry workers with conjunctivitis. Genetic analyses revealed that the viruses from the humans were closely related to those from chickens on affected farms. 相似文献
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Huakun Lv Jiankang Han Peng Zhang Ye Lu Dong Wen Jian Cai Shelan Liu Jimin Sun Zhao Yu Heng Zhang Zhenyu Gong Enfu Chen Zhiping Chen 《Emerging infectious diseases》2013,19(11):1885-1888
During April 2013 in China, mild respiratory symptoms developed in 1/61 workers who had culled influenza A(H7N9) virus–infected poultry. Laboratory testing confirmed A(H7N9) infection in the worker and showed that the virus persisted longer in sputum than pharyngeal swab samples. Pharyngeal swab samples from the other workers were negative for A(H7N9) virus. 相似文献
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目的 分析广东省深圳市19例人感染H7N9禽流感病例的流行病学分布特征和规律,为制定疫情控制措施提供依据。方法 收集中国疾病预防控制信息系统2013年12月19日-2014年2月15日报告的深圳市19例人感染H7N9禽流感确诊病例进行流行病学分析。结果 19例人感染H7N9禽流感病例中,男性10例,女性9例,年龄6~82岁,中位数年龄为56岁,其中>40岁13例,占68.4%,以离退休人员和家务及待业者为主,分别占31.6%和26.3%,分别有47.4%和26.3%的病例分布于龙岗和罗湖区;19例病例中5例有直接禽鸟类接触史,11例病例有活禽市场接触史;共追踪管理密切接触者830人,其中医务人员密切接触者587人,无二代病例;19例确诊病例中死亡2例,病死率为10.5%,其中男性和女性各1例,年龄均>40岁。结论 中老年是人感染H7N9禽流感的主要易感人群;规范活禽交易是有效防控人感染H7N9禽流感的关键环节。 相似文献