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Vincent Rajkumar Profile picture
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Jan 20 • 4 tweets • 2 min read
It's a medical miracle how vaccines developed within one year against the wild strain of COVID have maintained 90% efficacy against hospitalizations against an onslaught of variants. coronavirus.health.ny.gov/covid-19-break…
Risk reduction is how most of medicine works. Few things in medicine work 100%.

Few things work 90%.
You see the same effect in other places as well. Here is deaths by vaccination status from Switzerland.
ourworldindata.org/covid-deaths-b…
Chile has similar data showing the high efficacy of vaccines in preventing deaths in both delta and omicron waves.

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More from @VincentRK

Vincent Rajkumar Profile picture
Jan 21
It took 2 years for first 50 million confirmed cases in the US. Took 1 month for next 20 million. #OmicronSpeed Image
I think this is absolutely unprecedented. And why so many people who managed to stay safe for 2 years are now reporting that they have Covid.

Why hospitals and workplaces are struggling with worker shortages.
Thankfully due to vaccines deaths have been lower. But sadly we still lost 60,000 lives this past month.
Read 4 tweets
Vincent Rajkumar Profile picture
Jan 18
South Africa and UK is playing out along the east coast, including New York, New Jersey, Massachusetts: Rapid rise and then a rapid fall.

Cautiously hopeful. ImageImageImageImage
More here. It was my hope for the New Year.
As I have indicated the US is so large geographically that the overall time to peak and fall down for the country as a whole will be longer that South Africa or the UK. But each state will likely behave like the east coast states.
Read 4 tweets
Vincent Rajkumar Profile picture
Jan 17
Look at this figure. There are 3 main reasons why it looks the way it does:

1) Vaccines work
2) Immunity from prior Covid
3) Less lung involvement with omicron
ourworldindata.org/covid-metrics-…
Of these 3 reasons, one is easily available and provides great protection: Vaccines

It has a big impact in reducing risk of severe disease during this omicron wave everywhere.
Prior Covid also offers protection. But vaccines augment that protection even more.

Omicron may have lesser propensity for lung involvement, but it's not zero. We see people getting seriously ill. We see deaths. It's luck of the draw. The risk is not worth it.
Read 7 tweets
Vincent Rajkumar Profile picture
Jan 15
A lot of questions to my recent tweet on South Korea ask how did they do so well?

Its a combination of great talent & leadership, uniform non-politicized messaging, border control, effective test/trace system, high compliance with masks, distancing, & vaccination.

A strategy.
Many replies I got say it best. And I'll highlight some of them.
Test and trace early on combined with border control established a system that has been sustained for 2 years.
Read 9 tweets
Vincent Rajkumar Profile picture
Jan 14
Omicron who?

South Korea continues to be the role model. I hope they can sustain their science driven strategy which so far has saved hundreds of thousands of lives.
It's Korean American Day. 👏🎉
Even if Omicron causes a problem in South Korea, they have already won. At this point 93% of adults are fully vaccinated. Over 40% have been boosted. So their deaths and hospitalizations will stay much lower than here.
Read 5 tweets
Vincent Rajkumar Profile picture
Jan 13
If you act like everyone is going to get omicron anyway, you will get omicron.

If you take precautions & try your best not to get omicron, you may not get it.

If we take precautions, we can also delay infections. We prevent hospitals from being so totally overwhelmed.
Hospitals getting overwhelmed means it's harder to provide care for all other illnesses as well. @Craig_A_Spencer google.com/amp/s/amp.cnn.…
This is an excellent summary by @Craig_A_Spencer Image
Read 4 tweets

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