変異株に対する警戒が強まっている 米国で2変種株検出: ずくなしの冷や水

2021年01月19日

変異株に対する警戒が強まっている 米国で2変種株検出




※ Norio Nakatsuji@norionakatsuji氏の2021/1/21のツイート
海外情報では、当然ながら、PCR検査のプライマー設計を工夫してウイルスゲノムの複数箇所からのPCR産物シグナルを比較する事で、従来株と変異株の種類を同定できるPCRシステム確立している筈。実際に最初に英国で見つかった理由は幸運にもそう設計されてた。PCRで迅速発見したのち詳細ゲノム解析の筈。

※ kuri@kuri_in_SK氏の2021/1/20のツイート
保健省
”英国変異株B117は昨年11/14に既にスロバキアにあった。冷凍サンプルから判明。更に去年12月のTrencin市での一斉検査の陽性中57%が変異株”https://facebook.com/25540425199502

washingtonpost2021/1/18
Another coronavirus variant linked to growing share of cases, several large outbreaks, in California
Health officials stress they haven’t determined whether the variant might be more contagious or resistant to vaccines
A coronavirus variant first identified in Denmark has ripped through Northern California − including outbreaks at nursing homes, jails and a hospital in the San Jose area − prompting state and local officials to investigate whether it may be more transmissible.
California officials disclosed the rise of the variant Sunday night after genetic monitoring linked it to a fast-growing share of new cases, as well as to the outbreaks in Santa Clara county, which includes San Jose.
This rising variant is distinct from the highly contagious mutation discovered by Britain, which has also been found in California, and which federal health officials project could become the dominant strain in the United States by March based on its proven higher transmissibility.
Experts stress that they need to look more closely at the circumstances of the Northern California outbreaks, as well as at the latest variant − this one, known as L452R − before declaring it more contagious or more dangerous than the virus already broadly circulating.
The L452R variant was first detected in northern Europe in March and has since been confirmed in more than a dozen states, including California in May. The discovery did not garner much attention at the time because all viruses change constantly as they replicate. But public health authorities deem some variants to be “of concern” if evidence suggests they might be more contagious, potentially deadlier or resistant to vaccines.



Hiroshi Makita Ph.D.@BB45_Colorado氏の2021/1/18のツイート
返信先: @koichi_kawakamiさん
ティア3ロックダウン中だった英国の経緯を考えると、半月から一月で本邦には蔓延する恐れがありますね。
本邦では全くでの打ちようがないのでもうなるようにしかならないでしょう。

特務機関NERV@UN_NERV氏の午後7:57 ・ 2021年1月18日のツイート
【NHKニュース速報 19:57】
英国流行変異ウイルス 静岡の3人感染
英滞在歴なく市中感染か 厚生労働省

ロイター2021/1/14
[ロンドン 14日 ロイター] - シャップス英運輸相は14日、ブラジルで確認された新型コロナウイルス変異種を巡る懸念を理由に、南米諸国およびポルトガルからの入国を禁止すると発表した。
対象国はアルゼンチン、ブラジル、ボリビア、カーボベルデ、チリ、コロンビア、エクアドル、フランス領ギアナ、ガイアナ、パナマ、パラグアイ、ペルー、スリナム、ウルグアイ、ベネズエラ、ポルトガル。15日0400GMT(日本時間午後1時00分)から実施される。
ポルトガルに関しては、ブラジルとの往来が多いためとしたが、ポルトガルから必需品を輸送する労働者に関しては入国を認めるとした。
また、英国とアイルランドの国民や居住権を有する人には適用されないが、10日間の自主隔離が求められるという。新コロナウィルスの変異株に対する疫学者の警戒が強まっています。

※ Eric Feigl-Ding@DrEricDing氏の2021/1/4のツイート
Concerning−Top pandemic expert group @IndependentSage just came out with chilling stern warning:
スレッド
画鋲
”It is now clear that new variant is substantially more transmissible than earlier variants, by 40-80%.”
画鋲
”Pandemic is now out of control”. #COVID19 https://independentsage.org/wp-content/upl

※ Eric Feigl-Ding@DrEricDing 氏の2021/1/7のツイート
警告
CRUSH VIRUS NOW OR ELSE WE ARE SCREWED: Denmark’s CDC thinks new B117 #SARSCoV2 variant is so much more contagious (R +0.4 to +0.7) & inevitable that **if any country does not crush the R<0.7 now**, we will be completely #COVID19 screwed by Feb/March.
スレッド

https://ssi.dk/aktuelt/nyhede



TASS 11 Jan, 06:25
British coronavirus strain confirmed in Russia in late 2020
Now the patient is no longer contagious, Anna Popova, chief of Russia’s sanitary watchdog, said
MOSCOW, January 10. /TASS/. The first case of the British coronavirus strain was confirmed in Russia at the end of 2020 and now the patient is no longer contagious, Anna Popova, chief of Russia’s sanitary watchdog, said on Sunday.

"By the end of the last year, we saw that we had a variant of the British strain that is provoking serious fears now. It was found in only one person who felt and is now feeling well. He had no symptoms. Now, he is not contagious," she said in an interview with the Vesti news roundup on the Rossiya-1 television channel.

Thirty-two out of more than 7,000 people who arrived from the United Kingdom in a period from late November to the day when air service between the two countries was suspended tested positive for the novel coronavirus infection, Popova, said.

"More than 7,000 people had arrived in Russia from the United Kingdom from late November to December 22 when air service [with the United Kingdom] was suspended. Thirty-two of them were found to have the virus upon the arrival," she said.

According to Popova, twenty-eight of these thirty-two people had no symptoms. "Two of the remaining four people had mild forms [of the disease], and two needed hospitalization. But we have spotted all of them and took samples from them," she said.

The British strain of the novel coronavirus can be identified by PCR test used in Russia and the anti-coronavirus vaccines registered in Russia can ensure protection against it, Popova said.

"According to our data, testing systems used in Russia for PCR diagnosis detect this virus. And the vaccines that have been registered in Russia 100-percent ensure protection against it," she said.

She noted that the virus has not become more dangerous and doesn’t cause more serious forms of the disease but it has become more infectious. "It means that one person can infect more people," she said.

The United Kingdom’s Secretary of State for Health and Social Care, Matt Hancock, said on December 14, 2020 that British scientists had identified a new coronavirus strain that might be to blame for high infection rates in southeastern England. Hancock said preliminary analysis indicated that the newly-discovered virus strain was spreading faster than any of those exposed previously. Prime Minister Boris Johnson told an urgent news conference on December 19 that according to the current findings the new strain might be 70% more contagious. He added that British experts had not yet found any proof that the virus mutation was fraught with a greater risk of lethal outcome.

Following this news, Russia suspended air service with the United Kingdom from December 22.

Daniel Kraft, MD@daniel_kraft氏の2021/1/11のツイート
The #B117 Covid variant is 40-80% more infectious wirh high probability of becoming the dominant strain. #MaskUp
マスクをした顔
and stay vigilant.




Ohio researchers say they’ve identified two new Covid strains likely originating in the U.S.
Key Points
Ohio researchers said Wednesday that they’ve discovered two new variants of the coronavirus, one of which has become the dominant strain in Columbus, Ohio.
The new strain prevalent in the city appears to spread more easily, the researchers said.
“This new Columbus strain has the same genetic backbone as earlier cases we’ve studied, but these three mutations represent a significant evolution,” Dr. Dan Jones, lead author of the study, said.

posted by ZUKUNASHI at 11:37| Comment(0) | Covid19
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