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为尽快重启经济，一些国家宣布将大规模进行抗体检测，甚至计划发放“免疫通行证”。但世卫组织近日警告称，目前还没有证据证明感染新冠病毒康复且带抗体者不会二次感染。这意味着，发放“免疫通行证”可能加剧新冠肺炎疫情的持续蔓延。 The World Health Organization is warning that people who have had Covid-19 are not necessarily immune by the presence of antibodies from getting the virus again. 世界卫生组织警告说，感染新冠病毒并康复的人不一定能通过体内的抗体免疫避免二次感染。 "There is no evidence yet that people who have had Covid-19 will not get a second infection," WHO said in a scientific brief published Friday. 世界卫生组织在本周五（4月24日）发表的一份科学简报中说：“目前尚无证据表明，感染新冠病毒康复者不会再次被感染。” | 
