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1 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China; Capital Medical University School of Public Health, Beijing, China.
2 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China.
3 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China; Capital Medical University School of Public Health, Beijing, China. Electronic address: yangpengcdc@163.com.
4 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China. Electronic address: bjcdcxm@126.com.
1 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China; Capital Medical University School of Public Health, Beijing, China.
2 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China.
3 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China; Capital Medical University School of Public Health, Beijing, China. Electronic address: yangpengcdc@163.com.
4 Institute for Infectious Disease and Endemic Disease Control, Beijing Centre for Disease Prevention and Control (CDC), Beijing, China; Research Centre for Preventive Medicine of Beijing, Beijing, China. Electronic address: bjcdcxm@126.com.