新冠模型预测_德国流行病专家预测:新冠疫情发展有三种可能

2月12日,德国《时代》周刊网站上发表了一篇名为“大流行、普通流感或病毒正在消失”的报告,称世界各地的科学家数周以来一直试图找出新的冠状病毒。然而,由该病原体引起的肺部疾病仍有许多未解决的问题。新的冠状病毒流行病将如何发展?对中国来说,这种流行病主要还是一种紧急情况,还是会很快袭击毫无准备的国家?

新冠模型预测

负责新型冠状病毒核酸检测的工作人员在实验室进行样品处理新华社报道,德国亥姆霍兹传染病中心流行病学项目负责人杰拉德·克劳斯说:“我们还不知道。”他说,目前仍缺乏重要数据,无法做出可靠的预测。例如,每天有多少人被感染,他们是病得很重还是已经死了?病毒只能通过飞沫和接触传播,还是也可以通过空气传播?真的有“超级传播者”吗?但基本上,新冠状病毒流行的发展有三种可能的情况:

1。一场全球大流行

报告说,如果目前的情况不是最糟糕的,那么可以想象的最糟糕的情况是什么?新的冠状病毒可能会在未来几个月内扩散到世界各地。例如,这发生在1957年,当时全世界有100多万人死于新的H2N2流感病毒。如果新的冠状病毒传播到无法检测到感染者的国家,并且遏制措施无法有效发挥作用,这种情况现在也可能发生。在这种情况下,这些地方可能会出现新的疫情。

香港大学流行病学家梁在英国《卫报》上写道,这种新的冠状病毒可以感染世界60%至80%的人口。他的估计是基于这样一个假设,即每个感染者平均可以感染2.5个人。克劳斯还说:“我们不能排除大流行。”“随着疫情的发展,死亡率甚至可能下降“然而,当非常非常多的人被感染时,患有严重疾病的病人数量也会增加,”克劳斯解释说,这可能意味着许多人死亡。< br>

目前没有人知道世界上60%到80%的人口是否真的感染了新的冠状病毒克劳斯说,专家需要更好的数据来更准确地评估风险。

2。

报告说,专家们一直在努力控制中国的疫情。该国仍希望通过严格的隔离规则来实现这一目标,比如严格的旅行限制和对某些人的旅行限制。

克劳斯说:“我希望这些措施能够奏效,并在某个时候打破感染链。”“如果许多人在新病毒中存活下来,那么他们的身体就能抵抗病毒此外,它们不会将病原体传播给其他人,病毒会慢慢消失。2002年和2003年的非典就是这种情况

克劳斯说:“但是疫情比非典更严重“这是因为新的冠状病毒显然比非典病毒更容易传播

新冠模型预测

1年1月30日,工作人员对南京火车站大门进行了消毒新华社,杨栗,照片< br>

没有人知道被感染的人能够以多快的速度和多容易的方式无症状地传播病毒,这使得情况变得更加困难。< br>

因此,现在更重要的是隔离受影响的城市并快速控制小规模疫情事实上,除了湖北省,其他地方的情况似乎相当稳定,因为湖北省受到了灾害的严重影响。< br>

只能假设,如果在两个潜伏期都没有新病例,则病毒不再在人群中传播研究人员目前认为潜伏期——从感染到最初症状的时间——可以长达14天因此,一个月内不应出现新病例。但是克劳斯认为这是不现实的:“很难想象现在疫情会立即停止。”“

3。表现为普通流感

报告引用克劳斯的话说,如果新的冠状病毒疫情不能在一个单一的地区得到遏制,“这可能是最现实的情况。"感染者可能会在不知道自己感染了病毒的情况下离开,然后感染其他人。这不一定意味着灾难这种病原体可在人群中传播很长时间,偶尔(如在寒冷季节)可能会有小规模或大规模的爆发,尤其是在老年人或慢性病患者中。这种季节性模式在其他能感染人类的冠状病毒中很明显。据

报道,世界卫生组织总干事谭德泽最近在推特上表示,他担心以前从未去过中国的人在某些情况下可能会传播病毒。他说,虽然到目前为止只有少数这样的病例,但这可能表明病原体传播的范围比预期的要广。

新冠模型预测

1年24日,在武汉大学中南医院重症监护室,医务人员在隔离服上写下自己的名字,以便于识别。新华社记者熊琪拍摄的

199哈佛大学流行病学家巴勃罗·萨拉扎在网站上说:“国家卫生措施只能在一定程度上遏制疫情。”如果这种病毒很容易传播并且很大程度上没有被发现,我们对此无能为力。“< br>

在这种情况下,尽快提供疫苗尤为重要世界各地的研究人员目前正在开发疫苗。预计需要几个月的时间才能研制出疫苗,在人体内进行测试并获得批准。负责疫苗接种项目的比尔和梅林达·盖茨基金会的欧灵·莱文说:“对于目前的疫情来说,几个月肯定太长了,但是为了能够更快地应对未来的疫情,疫苗可能变得极其重要。”“

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