Thread by @DrEricDing

⚠️WEAR MASK EVEN IF VACCINATED—Top @WHO leader urges masks against #DeltaVariant even if 2-dose vaxxed. "Vaccine alone won't stop community transmission. People need to use masks consistently, be in ventilated spaces—even if you're vaccinated" #COVID19🧵
cnbc.com/2021/06/25/del…

2) "People cannot feel safe just because they had the two doses. They still need to protect themselves," WHO official Dr. Mariangela Simao @mariangelasimao told reporters.

3) The WHO comments come as some countries, including the Us, have largely done away with masks and pandemic-related restrictions as the Covid vaccines have helped drive down the number of new infections and deaths.

4) WHO officials said they are asking fully vaccinated people to continue to "play it safe" because a large portion of the world remains unvaccinated and highly contagious variants, like delta, are spreading in many countries, spurring outbreaks.

5) I personally think is this very wise advice. The #DeltaVariant is enormously contagious with even fleeting exposure of just seconds. This indicates clearly fast airborne transmission. Masks needed. Premium especially IMHO.

https://twitter.com/DrEricDing/status/1406779894785351688

6) Transmission happens with #DeltaVariant without contact at all. Security camera footage supports it.

7) Yes the vaccine protects you ~80% for two doses. But it’s 60% for AZ and 83-88% for Pfizer, and 94.% against hospitalization. But that is not fool proof. And you can still keep transmitting it to rest of the population that is vulnerable

8) 10% of hospitalizations last week in the Uk, which is heavily vaccinated, were still among 2 dose vaccinated. You need to keep masking, especially premium masks if possible.

https://twitter.com/DrEricDing/status/1406421721717030916

9) Why is @WHO right on masks? 50% #DeltaVariant infections in Israel were in fully Pfizer vaccinated adults.

90% of COVID in 🇮🇱 is #DeltaVariant

Israel is most fully vaccinated country in the world at 60% 2-shot Pfizer. #Delta is just that aggressive
wsj.com/amp/articles/v…

10) Israel is also forced to rescind its relaxation and reinstate its mask mandates. After just 1 week of relaxation of masks, they quickly back tracked. WHO is absolutely right on this. The CDC is totally wrong on letter 2 dose vaccinated people go without masks.

https://twitter.com/DrEricDing/status/1408431925979668481

11) expert warn areas with low vaccination are a “time bomb waiting to happen”.

#DeltaVariant rise will not end well for low vaccinations areas, whether in parts of US, Australia, or other under-vaccinated countries—unless we mask & ventilate.
#COVID19

12) As Dr Fauci warned recently: “The problem you get into … is that a single dose only provides about ~30% effectiveness [against #DeltaVariant]—so that is really an issue you gotta be careful”, as Fauci tells @nehakhanna_07.

13) To all national and local leaders — please heed these advice by @DrMikeRyan of the @WHO. He is the most respected outbreak preparedness person in my book.

https://twitter.com/DrEricDing/status/1409026740295503873

14) Please sign this mask reinstatement petition by @endCOVID19 to the CDC: endcoronavirus.org/blog/cdc-unive…

15) For those who wonder why we worry right now— those “fully” vaxxed with 1 shot J&J are not really fully vaxxed anymore, we don’t think. reuters.com/business/healt…

16) this is why we must still mask. 1 dose efficacy is just too low. Even 2 dose efficacy doesn’t prevent transmission airtight in any way. It’s not bulletproof for transmission.

https://twitter.com/DrEricDing/status/1409277821713793027

17) to be clear, I am the biggest vaccine supporter. But I’m a bigger supporter of ending the pandemic sooner with additional add on measures. UK with its high 47% 2-dose vaccine should be a lesson to all we need more mitigation like masks & ventilation.

https://twitter.com/drericding/status/1409268839951523841?s=21

18) this will unfortunately happen more and more with #DeltaVariant unless we mask up until 2-dose vaccinations high enough above 80%.

https://twitter.com/MelindaPerle/status/1409240593193111554

19) UPDATE— Los Angeles county, seeing 50% #DeltaVariant, is now supporting the WHO position to recommend masks indoors even if you’re vaccinated. This reason is much based on the science of vaccines and the Delta variant. See latest thread 🧵 below—

https://twitter.com/DrEricDing/status/1409686190073126915

20) UPDATE - @CDCgov finally got around to agreeing with the @WHO on masking on top of vaccinations after a full month of denial. A full 31 days later!!!

https://twitter.com/drericding/status/1420114553845714944