Discover and read the best of Twitter Threads about #k417n

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Will the newly identified sub-lineages of #Delta may initiate a new wave of #Covid19 in India? What impact the increasing prevalence of the Delta-D clade would have on global #COVID burden?

My write-up deliberating on these issues in @TheWireScience 👇…
#Delta variant and its extended family: How much do we need to worry?

During the first few months of the #pandemic, the evolution of the virus was relatively predictable, with substitutions accumulating at a fixed pace: 1 substitution every second week 2/
In contrast, the 2nd year of the #pandemic is punctuated by the emergence of several #variants that bore evidence of dramatic evolution 3/
Read 40 tweets
#CoronavirusUpdate 2021/6/1🇫🇷仏AFPが新型コロナ変異株のファクトファイルを公開。これまでの変異株をWHO指定の呼称「アルファ」「ベータ」「ガンマ」…で表記。興味深いことに #B16171 「カパ」についてはそこから派生した #B16172 を「デルタ」と表記。これではすぐに24字を使い果たしそうだ。
AFPはWHOが「懸念される変異株」(VOC)としてαアルファ・βベータ・γガンマ・δデルタ型とした4株のうち最初の3つと4つ目の「デルタ」を明確に区別。 α型 #B117 β型 #B1351 γ型 #P1 ら3変異株はいずれも #N501Y レセプターに変異がある型で、β型、γ型は #E484K #K417N レセプターに変異がある型と。 Image
一方、δデルタ型 #B16172 変異株は #E484Q #L452R レセプターに変異がみられる型であり、なぜかκカッパ型が #B16171 を指すようだが、このインフォグラフィックを正しく読めているのならば、 これら2種のレセプターに変異がみられる型が3系統存在する。

変異株の“進化“は止まることを知らない。 Image
Read 8 tweets

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