The COVID-19 pandemic is yet another reminder that the threat of
infectious disease has never really gone away. As the cornerstone of preventing and controlling
infectious diseases, effective
surveillance and
early warning are of great significance in
understanding the outbreak and
epidemic of specific
infectious diseases and putting forward effective prevention and control
measures. Therefore, we must continue strengthening the
construction of
infectious disease surveillance and
early warning system. We reviewed the
surveillance and
early warning practices of
infectious diseases in major countries and regions, then discussed the development direction in the field of
surveillance and
early warning of
infectious diseases to provide the reference for strengthening the
construction and capacity of
infectious disease surveillance and
early warning system in
China.