Mary Wilson
New member
Updated Feb. 25, 2021
By Jonathan Corum and Carl Zimmer
Each coronavirus contains nearly 30,000 letters of RNA. This genetic information allows the virus to infect cells and hijack them to make new viruses.
... Over the course of the pandemic, a number of variants of SARS-CoV-2 have arisen. Some of them are raising worries that they may draw out the pandemic or make vaccines less effective.
[TD="colspan: 2"]Added the B.1.526 variant, which is spreading in New York City.[/TD]
[TD="colspan: 2"]Studies suggest that a variant discovered in California is more contagious.[/TD]
[TD="colspan: 2"]Maryland confirms its first case of the P.1 variant.[/TD]
[TD="colspan: 2"]Massachusetts confirms its first case of the B.1.351 variant.[/TD]
[TD="colspan: 2"]Added the Q677 spike mutation, which was found in several lineages in the U.S.[/TD]
[TD="colspan: 2"] B.1.351 is confirmed in a Connecticut resident hospitalized in New York City.[/TD]
[TD="colspan: 2"]Studies suggest B.1.1.7 is likely more deadly than other circulating variants.[/TD]
[TD="colspan: 2"]Illinois and North Carolina confirm their first cases of the B.1.351 variant.[/TD]
[TD="colspan: 2"]South Africa stops using AstraZeneca’s vaccine against the B.1.351 variant.[/TD]
[TD="colspan: 2"]The B.1.1.7 variant is doubling every 10 days in the United States.[/TD]
(... continues, with diagrams)
https://www.nytimes.com/interactive/2021/health/coronavirus-variant-tracker.html#L452R
By Jonathan Corum and Carl Zimmer
Each coronavirus contains nearly 30,000 letters of RNA. This genetic information allows the virus to infect cells and hijack them to make new viruses.
... Over the course of the pandemic, a number of variants of SARS-CoV-2 have arisen. Some of them are raising worries that they may draw out the pandemic or make vaccines less effective.
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| B.1.1.7 | Variant of Concern 202012/01, or 501Y.V1 | Emerged in Britain in December and is roughly 50 percent more infectious. Now detected in over 70 countries and 33 states. |
| B.1.351 | 501Y.V2 | Emerged in South Africa in December. Reduces the effectiveness of some vaccines. |
| P.1 | 501Y.V3 | Emerged in Brazil in late 2020. Has mutations similar to B.1.351. |
| B.1 | D614G | Appeared in early 2020 and spread around the world. |
| Several | N501Y | A defining mutation in several lineages, including B.1.1.7, B.1.351 and P.1. Helps the virus bind more tightly to human cells. |
| Several | E484K | Appears in several lineages. May help the virus avoid some kinds of antibodies. |
| Several | K417 | Appears in several lineages, including B.1.351 and P.1. May help the virus bind more tightly to cells. |
| Several | L452R | Increasingly common in California, but not yet shown to be more infectious. |
| Several | Q677 | Found in seven U.S. lineages, but not yet shown to be more infectious. |
| B.1.427, B.1.429 | CAL.20C | Common in California, but not yet shown to be more infectious. Carries the L452Rmutation. |
| B.1.526 | — | Spreading in New York. One version carries the E484Kmutation, another carries S477N. |
[TD="colspan: 2"]Added the B.1.526 variant, which is spreading in New York City.[/TD]
[TD="colspan: 2"]Studies suggest that a variant discovered in California is more contagious.[/TD]
[TD="colspan: 2"]Maryland confirms its first case of the P.1 variant.[/TD]
[TD="colspan: 2"]Massachusetts confirms its first case of the B.1.351 variant.[/TD]
[TD="colspan: 2"]Added the Q677 spike mutation, which was found in several lineages in the U.S.[/TD]
[TD="colspan: 2"] B.1.351 is confirmed in a Connecticut resident hospitalized in New York City.[/TD]
[TD="colspan: 2"]Studies suggest B.1.1.7 is likely more deadly than other circulating variants.[/TD]
[TD="colspan: 2"]Illinois and North Carolina confirm their first cases of the B.1.351 variant.[/TD]
[TD="colspan: 2"]South Africa stops using AstraZeneca’s vaccine against the B.1.351 variant.[/TD]
[TD="colspan: 2"]The B.1.1.7 variant is doubling every 10 days in the United States.[/TD]
(... continues, with diagrams)
https://www.nytimes.com/interactive/2021/health/coronavirus-variant-tracker.html#L452R