COVID-19 Mu and R.1 Variants: What You Need to Know

https://www.abbott.com/corpnewsroom/diagnostics-testing/COVID-19-mu-and-r1-variants-what-you-need-to-know.html

As the Delta variant became dominant in the U.S. — and now as Mu and R.1 establish footholds around the world — the same measures that protected us against one protect us against another.

So, with people continuing to gather at more public places and events at near full capacity — including schools — here's what you need know about the Mu and R.1 variants

Fundamentals: The Centers for Disease Control and Prevention (CDC) reports that at its peak, Mu made up less than 5% of all variants circulating in the United States, but it has fallen to less than 1% of all COVID-19 cases in the country, even as cases in the country have approached — and, in some places, eclipsed — daily totals from the heights of the pandemic last year.

While R.1, like Mu, is not a rival to Delta, an outbreak took place in Kentucky in September.

• Since the end of last year, Mu and R.1 follow Delta (B.1.617.2), Gamma (P.1), Beta (B.1.351) and Alpha (B.1.1.7).
• While Delta is believed to be the most transmissible strain of COVID-19 so far, Mu "appears more transmissible than the other variants with the exception of Delta," according to Gavin Cloherty, head of Infectious Disease Research for Abbott's diagnostics business.
• The CDC notes that R.1 "mutations of importance" and "demonstrates evidence of increasing virus transmissibility," according to Prevention.

 

 

U.S. Accounts for Fifth of All Dangerously Mutated R.1 COVID Variant Cases

https://www.newsweek.com/america-fifth-mutated-r-1-covid-variant-cases-coronavirus-1632405

There have been 2,266 cases of the R.1 variant reported across 47 U.S. states, according to the latest available data collated by nonprofit Scripps Research.

Globally, there have been 10,573 known cases of the variant, which was first detected in Japan at the end of November 2020.

Scientists fear the variant's mutations could lead to increased resistance to protective antibodies, which are found in the recently infected and the vaccinated.

Dr. Amesh A. Adalja, a senior scholar at Johns Hopkins Center for Health Security, has suggested it is unlikely the R.1 variant will overtake the Delta variant as the most severe or transmissible mutation of the SARS-Cov-2 virus.

 

 

R.1: Another In The Growing List Of SARS-CoV-2 Variants

https://www.forbes.com/sites/williamhaseltine/2021/09/20/a-new-usjapan-variant-to-watch/?sh=4d6eebc93509

A variant detected in a Kentucky nursing home in March 2021, infecting 45 residents and health care personnel. Many fell ill and one died. The variant, which was first detected in Japan in December 2020, has over 10,000 entries in the GISAID SARS-CoV-2 database. In the United States, R.1 infections peaked in May 2021 and were last detected in early August 2021. This variant, like many others, was displaced by the Delta variant, which is now the cause of nearly all infections in the United States. We focus on this variant because unlike most variants of concern, the R.1 variant has relatively few mutations in the Spike protein in proportion to mutations in other regions of the genome. For this reason, it is worth understanding the mutations in virus in more detail.

这篇讲R.1病毒的特点，很长、很技术的科普读物。

 

Lambda没事了？这个冬天是不会好过的。

谢谢 分享

“专家”说Delta 是最后一波了，这是大家喜欢听到的

美国搞到今天这地步就是因为一帮牛烘烘的砖家，居然一个个都没责任，福奇还升官了。