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对于大流行结束,并没有明确的定义,不仅如此,全球疫情的威胁程度也因会不同的国家而异。
“(大流行的终结),在某种程度上是一种主观判断,因为这不仅仅与感染病例数量有关,还事关严重性及其影响,”世界卫生组织紧急事务负责人迈克尔·瑞安博士说。
2020年1月,世卫组织将新冠病毒感染爆发列为“国际担忧”的全球卫生危机。数月后,该联合国卫生机构又将新冠疫情界定为“大流行”,这反映出该病毒已蔓延到地球上几乎所有大陆的事实。
当世卫组织认为该病毒不再是国际担忧的紧急情况时,大流行可能会被公认为已经终结,世卫组织专家委员会每隔三个月就会重新评估这一界定。但是,危机的最严重阶段何时在各国境内缓解可能会有所不同。
杜克大学传染病专家Chris Woods博士说:“我们不可能会看到有一天有人说,‘好吧,大流行结束了’。”尽管没有普遍认同的标准,但各国可能会继续寻求随着时间的推移持续控制并减少感染病例。
科学家们预计,COVID-19最终将会成为一种更可预测的病毒,就像流感一样,这意味着尽管它仍将继续导致季节性爆发,但不会像现在我们看到的这样,感染病例以惊人的速度和规模激增。但即使如此,Chris Woods博士说,一些习惯如在公共场所佩戴口罩可能会继续坚持下去。
“即使大流行结束后,COVID-19仍将与我们同在,”他说。
来源:AP NEWS;编译:POLARZONE
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