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[德国新闻] 病毒学家透露:新冠病毒变异,致病性减弱,渐渐“转化为感冒”?

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  • TA的每日心情
    开心
    2016-10-12 21:50
  • 签到天数: 1 天

    [LV.1]初来乍到

    发表于 2020-8-19 12:30 | 显示全部楼层 |阅读模式
    德国喜宝小鸭子洗手洗脸泡沫三瓶包邮只要90元!

    越来越多的新增感染,每天相对恒定的死亡人数。冠状病毒是否变得更加无害?有迹象表明新冠病毒正在变异,从长远来看正在减弱,大流行的后继发展走向温和。

    根据埃森大学医院的病毒学家的说法,有迹象表明冠状病毒由于突变而减弱。乌尔夫·迪特默(Ulf Dittmer)教师对媒体表示:“实际上有迹象表明该病毒已经在减弱。也可能是该病毒在演变过程中只是引发感冒或流鼻涕的趋势。”

    迪特默教授得出以上论点的事实是,在第二波浪潮开始的许多国家,死亡人数明显减少。德国的疫情数据也是如此,虽然新增感染人数稳步增加,但与冠状病毒有关的每日死亡人数一直保持在较低水平。





    杀手还是感冒:病毒完美转身突变?


    迪特默教授在新冠引发疾病的临床表现变化中发现了突变迹象。他说:“新冠患者出现味觉和嗅觉受到影响的症状越来越多。这几乎是目前最频繁出现的症状。” 而这个症状与疾病轻症有关。

    迪特默说:“该病毒不想进入到呼吸道的深处,而是希望进一步向上移动,进入上呼吸道,因为它可以从那里更好地传播。这样可以减少危险。这在进化的角度是有意义的。”然而,迪特默教授并没有肯定就是突变降低了风险,“因为随着大流行的持续,新冠治疗手段加强,受感染者的平均年龄也在同时发生变化”。


    Bernhard-Nocht-Institut 热带医学研究所的Jonas Schmidt-Chanasit教授说:“病毒的转变研究必须在具有不同SARS-CoV-2基因型的动物模型中进行感染实验。”

    无论如何,病毒学家们前段时间就已经推测,新冠病毒株的突变将更适合人类。这种适应可能导致的结果是,它将更容易传播,但会留在鼻腔,变成简单的感冒。


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    发表于 2020-8-19 13:54 来自手机 | 显示全部楼层
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    发表于 2020-8-19 19:17 | 显示全部楼层
    德国喜宝小鸭子洗手洗脸泡沫三瓶包邮只要90元!
    真心希望是这样。但是拿夏天和感染人群主要为青壮年的数据说事是没有太多说服力的,毕竟就是在中国开始那会儿,湖北以外的死亡率也就1%上下。
    到底如何看秋冬的情况以及届时现在这一波留下的后遗症的情况才能下结论
    Die von den Nutzern eingestellten Information und Meinungen sind nicht eigene Informationen und Meinungen der DOLC GmbH.
  • TA的每日心情
    开心
    2020-9-18 18:09
  • 签到天数: 32 天

    [LV.5]常住居民I

    发表于 2020-8-19 21:53 | 显示全部楼层
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    该用户从未签到

    发表于 2020-8-20 02:17 | 显示全部楼层
    德国喜宝小鸭子洗手洗脸泡沫三瓶包邮只要90元!
    Travel bans meant to stop the coronavirus from getting to the US from China and Europe came too late, according to a new analysis of cases from the US Centers for Disease Control and Prevention.

    The US restricted travel from China on February 2 and from Europe on March 13, but by March 8, Covid-19 was already circulating among the community in New York City and, by March 15, community transmission of the virus was already widespread, the analysis found.
    What was circulating most closely matched the strain of the virus circulating in Europe, not China, which President Donald Trump has repeatedly blamed for not preventing its spread to the US.
    By the time the Trump administration had placed travel restrictions on Europe, the importation of the virus and the community spread of the disease had already started in New York City, according to the report. Testing was limited at the start of the epidemic in New York City, which allowed people with undetected cases to spread the virus.
    Trump has repeatedly pointed to his travel bans as evidence that his administration has effectively responded to the pandemic, claiming as recently as Tuesday that "we saved millions, potentially millions of lives."
    The new study looked at data collected by the New York Department of Health and Mental Hygiene between March 1 and 20, the early days of the pandemic in the US. The department announced on March 8 that there was sustained community transmission.
    The department examined specimens taken from people who went to the emergency room with flu-like symptoms. Of the 544 specimens tested, 36, or 6.6%, were positive for the novel coronavirus.
    Doing additional genetic sequencing of the samples, the strain of the virus more closely resembled the one circulating in Europe, rather than the one circulating in China. That means that the novel coronavirus was likely introduced to New York through Europe or by travelers from other US locations, the report said.
    CNN reported in April that two separate research projects started earlier this year also suggested as much, also suggesting the virus may have been circulating in the city earlier than thought.
    There are currently more than 3,497,000 confirmed cases of coronavirus in the US, and the virus has claimed the lives of more than 137,000 Americans, according to data from Johns Hopkins University.
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