国家自然科学基金81672032;国家科技重大专项课题2018ZX10301401;中国医学科学院医学与健康科技创新工程2016-I2M-1-014、2016-I2M-1-005National Natural Science Foundation of China81672032;National Major Sciences and Technology Project for Control and Prevention of Major Infectious Disease in China2018ZX10301401;CAMS Innovation Fund for Medical Sciences2016-I2M-1-014,2016-I2M-1-005