Kuai Technology reported on August 29 that a study recently released by the Centers for Disease Control and Prevention of the United States showed that after the delta mutant strain of the COVID-19 became the “main force” of the epidemic, the overall effectiveness of the COVID-19 vaccine approved in the United States has been reduced. About one-third. Researchers analyzed the …
初步估计 “案例零” 早在12月 15 Beijing Daily Client Announcement On the afternoon of January 10, the Hebei Provincial Government Information Office held a press conference on the prevention and control of the new crown pneumonia epidemic: 河北疾控: preliminary estimates of “不. 0 案件” earlier than December 15 Shi Jian, director of the Emergency …