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Vincent Rajkumar Profile picture
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28 Nov, 4 tweets, 1 min read
I was just thinking of flying to see family. #OmicronVariant threatens plans because we have no idea what countries and airlines will do at the last minute.

The last thing you want is to be stuck for days in a quarantine hotel.
Like what happened to passengers on these two flights.
Airline websites give a lot of unhelpful disclaimers: "We have no idea what the rules may be. Requirements may change at last minute." Right.

Can we not have a worldwide consensus policy requirements for air travel that will be enough for Covid and any new variant?
Like this does not inspire confidence. 👇

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More from @VincentRK

Vincent Rajkumar Profile picture
23 Nov
People are rightly confused how is it that we have another wave when 60% or more are vaccinated, & 40-50% of the population has probably had COVID.
Where is immunity?

Thread.

1/ How strong and durable immunity is following infection or vaccination depends on many factors.
2/ The strength and durability of the immune response depends on the nature of the antigen, how it is presented to the immune system, number of exposures, etc.

3/ With Covid we also got a bad deal: A new serious virus that we were not immune to, that spreads easily, & mutates.
4/ The immune response is more durable with repeated exposure: generation of a true secondary immune response. microbiologynotes.com/differences-be…

With natural infection sometimes one infection is long enough to trigger a durable secondary response. Sometimes its not, & you are susceptible.
Read 15 tweets
Vincent Rajkumar Profile picture
21 Nov
Just like anti vaccine folks found Gibraltar, another place they keep pointing to is Vermont, the most highly vaccinated state.

Best for people know the facts.

1) No state has done as well as Vermont in this pandemic: fewest lives lost. They know what they are doing.
2) Vermont is the best vaccinated state and vaccinations have kept deaths low. Since June 1 by which data everyone had an opportunity to be vaccinated, deaths have continued to stay low in Vermont. But have increased in many less well vaccinated states.
3) Even Vermont is not as well vaccinated as it should be. So 72% while #1 in the US is lower than many countries. There are vulnerable people and unvaccinated people, so with delta cases will occur.
Read 9 tweets
Vincent Rajkumar Profile picture
21 Nov
Michigan COVID cases go higher than ever before. Only 54% in the state are fully vaccinated.
There are like 17 states with vaccination rates lower than Michigan.

Thanksgiving, Holiday season, and Winter are coming.
First things first. Get vaccinated if you haven't already. Get a booster if you are already fully vaccinated.

Vaccines prevent hospitalizations. A big deal in many ways, including because there are people with other illness who need beds.

Vaccines save lives.
Read 5 tweets
Vincent Rajkumar Profile picture
20 Nov
US has lost more lives to COVID in 2021 than 2020. But 450,000 deaths were prior to Feb 1, before any effect of vaccines could have occurred.

180,000 deaths since June 1, the date by which adults in USA could have been fully vaccinated if they wanted. wsj.com/articles/u-s-c…
The 100,000 lives lost in last 2 months is the most distressing. Because 90% of these were preventable.
For a while there till September things seemed to be going well. Hard to watch.
Read 4 tweets
Vincent Rajkumar Profile picture
20 Nov
In every age group, COVID vaccines reduce the risk of severe disease or death by >90%. health.state.mn.us/diseases/coron…
Texas. H/T @ArielCohen37
Overall for the US. Age 65+ covid.cdc.gov/covid-data-tra…
Read 9 tweets
Vincent Rajkumar Profile picture
19 Nov
Suddenly a lot of anti vaccine have found Gibraltar.

My response:
1) While a breakthrough wave is occurring, the ~100% vaccine rate is keeping COVID deaths at zero or near zero.

2) "Natural immunity" from higher infection rate compared to US didn't prevent present wave either. ImageImage
Messages:

1) 2 dose vaccine works really well in preventing deaths & serious disease.

2) We have vulnerable among us: elderly & immunocompromised, children less than 5 who cannot be vaccinated; and risks of long term Covid. So get a booster if offered.

3) Continue precautions
So instead of worrying about Gibraltar, or Malta, or Iceland, or Singapore or anyone else who has high vaccination rates — please get vaccinated if you haven't already done so.
Read 4 tweets

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