Preliminary inferences on the age-specific seriousness of human disease caused by avian influenza A(H7N9) infections in China, March to April 2013.
نویسندگان
چکیده
Between 31 March and 21 April 2013, 102 laboratory-confirmed influenza A(H7N9) infections have been reported in six provinces of China. Using survey data on age-specific rates of exposure to live poultry in China, we estimated that risk of serious illness after infection is 5.1 times higher in persons 65 years and older versus younger ages. Our results suggest that many unidentified mild influenza A(H7N9) infections may have occurred, with a lower bound of 210–550 infections to date.
منابع مشابه
Human infections with avian influenza A(H7N9) virus in China: preliminary assessments of the age and sex distribution.
WPSAR Vol 4, No 2, 2013 | doi: 10.5365/wpsar.2013.4.2.005 www.wpro.who.int/wpsar 1 a Emerging Disease Surveillance and Response, Division of Health Security and Emergencies, World Health Organization Regional Offi ce for the Western Pacifi c, Manila, Philippines. b Emerging Disease Surveillance and Response, World Health Organization China Offi ce, Beijing, China. * Members of the World Health ...
متن کاملEpidemiologic characteristics of cases for influenza A(H7N9) virus infections in China.
TO THE EDITOR—China’s National Health and Family Planning Commission announced 3 deaths caused by avian-origin influenza A(H7N9) virus in March, which was the first time that the H7N9 strain has been found in humans [1]. This is of major public health significance and raises urgent questions and global concerns [2, 3]. To explore epidemic characteristics of human infections with H7N9 virus, dat...
متن کاملProfiles of Acute Cytokine and Antibody Responses in Patients Infected with Avian Influenza A H7N9
The influenza A H7N9 virus outbreak in Eastern China in the spring of 2013 represented a novel, emerging avian influenza transmission to humans. While clinical and microbiological features of H7N9 infection have been reported in the literature, the current study investigated acute cytokine and antibody responses in acute H7N9 infection. Between March 27, 2013 and April 23, 2013, six patients wi...
متن کاملClinical severity of human infections with avian influenza A(H7N9) virus, China, 2013/14.
Assessing the severity of emerging infections is challenging because of potential biases in case ascertainment. The first human case of infection with influenza A(H7N9) virus was identified in China in March 2013; since then, the virus has caused two epidemic waves in the country. There were 134 laboratory-confirmed cases detected in the first epidemic wave from January to September 2013. In th...
متن کاملSpatial and temporal analysis of human infection with avian influenza A(H7N9) virus in China, 2013.
Descriptive and geographic information system methods were used to depict the spatial and temporal characteristics of the outbreak of human infection with a novel avian influenza A(H7N9) virus in mainland China, the peak of which appeared between 28 March and 18 April 2013. As of 31 May 2013, there was a total of 131 reported human infections in China, with a cumulative mortality of 29% (38/131...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin
دوره 18 19 شماره
صفحات -
تاریخ انتشار 2013