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The study did not investigate SARS-CoV-2, the new coronavirus that has killed over 227,000 Americans.

THREAD: Now that scientists have found a growing number of individuals who’ve caught the coronavirus twice, the question of whether people have immunity to SARS-CoV-2 after getting it, and if so for how long, has become more urgent. Here's what you need to know:

The study did not investigate SARS-CoV-2, the new coronavirus that has killed over 225,000 Americans. While the two viruses are similar, they should not be considered interchangeable.

ICYMI Research in this week's issue—Prevalence of SARS-CoV-2 antibodies in a large nationwide sample of patients on dialysis in the USA: a cross-sectional study

It's not clear why some people who've caught SARS-CoV-2 can be reinfected, though the virus’s mutation rate hasn't raised alarms yet. Read more about how we understand #Covid19  immunity in @business  :

Wastewater monitoring for SARS-Cov-2 was supposedly an interesting tool to track the virus spreading trend. Did it lose its interest with increased testing capacity?

Free Access: NEJM Covid-19 Articles and Resources. #COVID19  #SARSCoV2 

The study did not investigate SARS-CoV-2, the new coronavirus that has killed over 225,000 Americans.

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A 14-year-old has won $25,000 for a discovery that could provide a potential therapy to Covid-19. Anika Chebrolu's invention uses in-silico methodology to discover a lead molecule that can selectively bind to the spike protein of the SARS-CoV-2 virus.

I assessed the risk of Trump having infected Biden at the debate, based on what we know about how SARS-CoV-2 spreads, and how long it takes to be infectious or develop symptoms. (Yes, Biden tested negative today but that means little this early.)

Starting Tuesday, MIT is offering a weekly class to undergraduates **and the public** called “COVID-19, SARS-CoV-2 and the Pandemic.” An impressive lineup of guest speakers are coming. Livestream info here:

Two inoculations with a new SARS-CoV-2 mRNA-based vaccine that encodes a protein in the coronavirus spike elicited high titers of virus-neutralizing antibody in healthy adult volunteers. Virus-specific T-cell responses were also elicited. #COVID19  #SARSCoV2 

Quick tip on #COVID_19  terminology: *Coronavirus: family of viruses that cause, eg, common cold, MERS, SARS *Novel coronavirus: a newly discovered kind of coronavirus *COVID-19: the disease caused by the new coronavirus *SARS-CoV-2: official designation of virus causing COVID-19

More than 200 scientists have outlined evidence that they say shows the novel coronavirus can spread in tiny airborne particles, urging the @WHO  to update its guidance. Read our story on what we know so far about airborne transmission of SARS-CoV-2.

More than 90 vaccines are being developed against SARS-CoV-2 across the world. At least six groups have begun injecting formulations into volunteers in safety trials. Here is a graphical guide explaining each vaccine design. #COVID19 

In a first, Indian scientists have revealed a microscopy image of SARS-CoV-2 virus (COVID19). Scientists took the throat swab sample from first laboratory-confirmed COVID19 case in India, reported on Jan 30 in Kerala. The findings are published in the latest edition of the IJMR.

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I wrote about the new coronavirus itself--where it came from, why it's behaving in the way it's behaving, how it infects and kills, and what the summer might bring. It's early days, of course, but this serves as a rough preliminary portrait of SARS-CoV-2.

Some not-horrible news on SARS-CoV-2 for once: It's mutating slowly considering how many people it has infected, which suggests a vaccine would be lasting, like vaccines for measles or chickenpox, rather than temporary like vaccines for flu. @JoelAchenbach 

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