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BACKGROUND On September 21, 2009, China began administering vaccines, obtained from 10 different manufacturers, against 2009 pandemic influenza A (H1N1) virus infection in priority populations. We aimed to assess the safety of this vaccination program. METHODS We designed a plan for passive surveillance for adverse events after immunization with the(More)
BACKGROUND The last case of infection with wild-type poliovirus indigenous to China was reported in 1994, and China was certified as a poliomyelitis-free region in 2000. In 2011, an outbreak of infection with imported wild-type poliovirus occurred in the province of Xinjiang. METHODS We conducted an investigation to guide the response to the outbreak,(More)
The amount of litter and its type can affect seedling establishment and species richness in plant communities. However, little is known about the species-specific effects of litter, especially in the presence of a competitor. We conducted a common garden test to examine the combined effects of competition and plant litter from conspecific versus(More)
OBJECTIVE To analyze the timeliness of detection and reporting on public health emergency events, and to explore the effective strategies for improving the relative capacity on those issues. METHODS We conducted a retrospective survey on 3275 emergency events reported through Public Health Emergency Events Surveillance System from 2005 to the first half(More)
BACKGROUND After being polio free for more than 10 years, an outbreak following importation of wild poliovirus (WPV) was confirmed in Xinjiang Uygur Autonomous Region, China, in 2011. METHODS A cross-sectional study was conducted prior to supplementary immunization activities (SIAs), immediately after the confirmation of the WPV outbreak. In selected(More)
OBJECTIVE To describe the occupational distribution of staff who worked on detection and reporting on public health emergency events, and to explore the effective strategies for identification and reporting on emergency events. METHODS We conducted a retrospective survey on 3275 emergent events reported through Public Health Emergency Events Surveillance(More)
To evaluate the safety of influenza Type A (H1N1) vaccine by review the incidence, epidemiology characteristics of sudden death and the deaths related with immunization, especially focus on the sudden deaths after immunization of influenza Type A (H1N1) vaccine. Preliminary showed that those deaths reported as adverse events following immunization did not(More)
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