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尽管疫情形势依然严峻，但一些国家已经开始放松封锁措施，还有一些国家试图重新开放经济。对此世界卫生组织警告称，即使疫苗研发出来，新冠病毒也很难控制住，甚至可能永远无法消失，所以现在降低警戒级别十分危险。 A laboratory technician is seen at the Inselspital Universitaetsspital Bern university hospital during researches for a vaccine against the coronavirus disease (COVID-19) in Bern, Switzerland April 22, 2020. REUTERS/Arnd Wiegmann The coronavirus "may never go away", the World Health Organization (WHO) has warned. 世界卫生组织警告称，新冠病毒“可能永远不会消失”。 Speaking at a briefing on Wednesday, WHO emergencies director Dr Mike Ryan warned against trying to predict when the virus would disappear. 世界卫生组织紧急项目执行主任麦克·莱恩博士在周三He added that even if a vaccine is found, controlling the virus will require a "massive effort". 他补充说，即使研发出了疫苗，控制住新冠病毒也需要“极大的努力”。 Almost 300,000 people worldwide are reported to have died of coronavirus, and more than 4.3m cases recorded. 全世界报告的新冠肺炎死亡病例已近30万，记录在案的病例超过430万例。 "It is important to put this on the table: this virus may become just another endemic virus in our communities, and this virus may never go away," Dr Ryan told the virtual press conference from Geneva. | 
