HERD IMMUNITY ACQUIREMENT FOR COVID 19 PREVENTION
Dr. Yongxin Zhang* and Ying Wang
ABSTRACT
COVID 19 is one of the most severe infectious diseases in human history because of its world-wide pandemic, rapid spreading, high mortality and lack of effective vaccine, and therefore the studies on herd immunity for COVID 19 are needed urgently. Natural infection, vaccination and artificial small-amount pathogen infection (ASAPI) are three potential strategies for establishing herd immunity against COVID 19. The features and feasibility of these strategies are discussed in this review.
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