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Kang Minmin,松茸巴拉诺维奇 director of the Infectious Disease Prevention and Control Institute of the Guangdong Provincial Center for Disease Control and Prevention and deputy chief physician, who grew up in the yard of the epidemic prevention station, said: "I have also witnessed the development of disease prevention and control in our country. For example, in 2009 A At the time of the epidemic, our city-level CDC just had the ability to detect nucleic acids by PCR. After years of development, we can not only quickly carry out multi-pathogen detection, but also conduct gene sequencing and homology analysis of pathogens , this technological advancement is very large.”