Dong-lei Liu

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OBJECTIVE Using simulated outbreaks to choose the optimal model and its related parameters on measles so as to provide technical support for developing an Auto Warning System (AWS). METHODS AEGIS-Cluster Creation Tool was applied to simulate a range of unique outbreak signals. Then these simulations were added to the actual daily counts of measles from(More)
OBJECTIVE To study the epidemiological impact of varicella vaccine vaccination on kindergartens and school children in Beijing. METHODS According to "China Information System for Diseases Control and Prevention", the reported clinical diagnosis varicella cases were tracked in kindergartens, primary and secondary schools whose onset date were from 2008 to(More)
OBJECTIVE To understand the risk factors on severe acute respiratory syndrome (SARS) among their contacts and to develop effective strategy for its control. METHODS Available epidemiological data of SARS cases and close contacts were reviewed and analyzed by SPSS. RESULTS Out of the 2195 close contacts, 138 (6.3%) were diagnosed as SARS. Among(More)
OBJECTIVE To evaluate immunogenicity after primary vaccination by different sequential program of inactivated poliovirus vaccine (IPV) and oral poliovirus vaccine (OPV). METHODS Children of 2 months old (60-89 days) selected in Beijing were assigned to 4 groups, 1 dose IPV plus 2 doses OPV (I-O-O, 122 children), 2 doses IPV plus 1 dose OPV(I-I-O, 103(More)
OBJECTIVE To investigate the diphtheria antibody level in healthy population in Beijing. METHODS 10 age groups (< 1, 1 to 4, 5 to 9, 10 to 14, 15 to 19, 20 to 24, 25 to 29, 30 to 34, 35 to 39, and > or =40) were sampled by the Multi-stage stratified sampling method in 9 districts in Beijing, and 2 003 sera from healthy population were collected. The(More)
OBJECTIVE To evaluate safety of different sequential immunization schedules of inactivated poliovirus vaccine (IPV) and oral poliovirus vaccine (OPV) primary vaccination. METHODS Infants of 2 months old (60-89 days) selected in Beijing, were assigned to four groups, 1 dose IPV plus 2 doses OPV (I-O-O), 2 doses IPV plus 1 dose OPV(I-I-O), 3 doses IPV(More)
OBJECTIVE To evaluate the safety of 2009 influenza A (H1N1) vaccine based on mass immunization initiative in Beijing. METHOD There were 2 113 280 people were vaccinated during September to December 2009. The information of adverse events following immunization (AEFI) was collected through surveillance system, and descriptive methodology was used for data(More)
OBJECTIVE To explore the herd immunity against influenza A (H1N1) in pre-vaccinated residents aged over 5 years, and therefore to provide data for vaccination policies in high risk populations. METHODS From October to December 2009, Beijing CDC conducted a serum survey of the novel influenza A (H1N1) in the local residents, stratified in 10 age groups(More)