CDC EXPERT: The Minimum Time it takes a vaccine to be effective is estimated to be six months
Release time:
2020-03-18 12:39
Source:
According to the official Weibo Account of CCTV's News 1 + 1 program, on March 17, cCTV's "News 1 + 1" will link up with Tianjin, the leader of the second group of medical teams in Wuhan, an Jianmin, and Wu Zunyou, the chief epidemiologist at the Chinese Center for Disease Control and Prevention, to explain the epidemic problems of public concern. To answer the question of how long it will take before the vaccine can be used, Wu Zunyou said: Even if special measures are taken, the vaccine will have to go through several phases of clinical trials, including clinical phase I, clinical phase II and clinical phase III. 1, the first phase to do safety tests, the minimum is not less than 20 days; 2, the second phase is to test the procedure of concentrated vaccine, about 200 to 300 people, and so on recruitment, the minimum need a month; Phase 3 is to evaluate the effectiveness of the vaccine, if the patient incidence rate is high, the need for a smaller number of samples, evaluation of such an effect, the shortest also take from three to five months. That means it could take as little as six months to complete phase III trials and conclude that the vaccine works.
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