Since political officials are trying to censor CDC reports, I thought I'd share 12 of the ones I've found useful:

1. Children of all ages are susceptible to SARS-CoV-2. Of ~600 attendees in this Georgia Camp, 44% tested positive. Median age was 12. 1/12…
2. SARS-CoV-2 is stable in air: once airborne, SARS-CoV-2 retains ability to infect cells for at least 16 hrs. It's hardier in aerosols than SARS-1 or MERS. This helps explain why airborne route could be major culprit 2/12…
3. Testing asymptomatic people is really important. This report on prisons shows that limiting tests to just symptomatic people underestimated cases by 12 times 3/12…
4. Going to restaurants can be risky. This study of patients shows that those who tested positive for COVID19 were actually 2X more likely to have dined at a restaurant in the last two weeks 4/12…
5. Young children contract SARS-CoV-2 and spread it to households. This study of childcare facilities uncovered 12 children who acquired the virus and passed it onto 26% of their non-facility contacts, including family members 5/12…
6. We need more testing. Infections in health workers often go undetected: in participants who had contracted the virus, about half didn't know they'd previously had COVID19, and two out of three didn't even have a prior positive test result.…
7. Air Travel can be risky: even though a passenger on this flight wore an N95 mask most of the time, she was infected during the flight. She was seated 3 rows away from an asymptomatic patient and took off her mask when using the bathroom 7/12…
8. Virus is very contagious: of 3,635 meat facility employees, 929 (26%) tested positive. And that's an under-estimation of all cases since testing was directed at symptomatic people. An additional 210 of their contacts were also infected w/SARS-CoV-2 8/12…
9. Coronavirus is in the air: 94 employees (out of 216) were infected in a call center in South Korea, a 43.5% attack rate! Nearly all of them sat on the same side of the building, suggesting airflow as culprit 9/12…
10. Another study pointing to coronavirus in the air: an asymptomatic individual sitting at a table in a restaurant infected people sitting at two other tables that were facing an Air Conditioning unit, pointing to recirculated air as the culprit 10/12…
11. Masks should be encouraged: Two hair stylists who were COVID-19 positive interacted with 139 clients. Everyone was wearing masks. 67 clients agreed to be tested and none of them were infected 11/12…
12. young adults are not immune: of 508 hospitalized patients in this early study, 20% were aged 20–44 ,18% were 45–54 years, 17% were 55–64 years. Almost half of those in ICU were under 65 12/12…

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More from @AliNouriPhD

20 Sep
1. CDC: nearly 11,000 exposed to coronavirus on flights. Agency investigated 1,600 cases of people who flew while at risk of spreading the coronavirus, identifying nearly 11,000 people who potentially were exposed to the virus on flights 🧵…
2. According to story, CDC contends viruses don't spread easily on planes w/air filtration systems, but being in close proximity to people for long periods is a problem. CDC’s guidance for travel is that staying home is safest. Indeed, in-flight transmission has been observed...
3. Yesterday researchers published an example of SARS-CoV-2 spread on planes. In March, a super-spreading event on a 10-hour London to Hanoi flight led to 16 Infections due to what is thought to be airborne transmission on the aircraft... Image
Read 5 tweets
20 Sep
1. Japan has a remarkably low death rate despite avoiding harsh lockdowns. That's because it a) recognized early that the virus doesn't just transmit at close distances, but also long-range & b) its public adheres to public health guidance. Western nations should emulate these 🧵 Image
2. One feature of the virus is super-spreading where small minority can infect many others, often in crowded, poorly ventilated places. Few examples below👇. While @CDCgov, @WHO, others ignored or were too slow to acknowledge this, Japan embraced it early.
3. It did that by advocating for the 3 Cs: avoid close contact, crowded places, and closed spaces WITH POOR VENTILATION. In other words, the virus doesn't just come out of your mouth and fall to the ground within 6 ft, but can float in the air you breathe, so mix in fresh air. Image
Read 5 tweets
18 Sep
1. CDC: Super-spreading event on a 10-hour London➡️Hanoi flight w/16 Infections very likely acquired on board✈️.

"This generally in line with the mounting evidence that airborne transmission of SARS-CoV-2 is a major yet under-recognized transmission route"🧵
2. Authors go on: industry classifies in-flight transmission risk as very low & recommends only use of face masks w/o additional measures to increase physical distance, such as blocking the middle seats. "Our findings challenge these recommendations."…
3. This is why @FAScientists have asked the airlines to block the middle seat. It won't make the problem of long-range aerosols go away but will reduce the risk of short-range transmission:…
Read 6 tweets
16 Sep
1st completed Randomized Clinical Trial for Convalescent Plasma finds NO IMPROVEMENT in mortality or progression to severe disease. Preprint:

You'll recall after pressure from President, FDA authorized the therapy in August: 🧵 1/6
During that announcement the President, Sec. Azar & Commissioner Hahn all falsely claimed the therapy reduces mortality by 35%. Hahn later retracted.

Azar: "We dream in drug development of something like a 35% mortality reduction" 2/6….
FDA authorization was based on a NON-randomized Mayo study that showed some improvement.

But the new study out of India, the first completed randomized trial, found no mortality reduction. Separately, a randomized Netherlands study was discontinued, having found no benefit. 3/6
Read 6 tweets
15 Sep
In case there's doubt that the virus can spread through respiratory particles that float in air and travel far, I wanted to share these studies:

1. Indoor airborne event: plant worker transmits virus to those 24ft away in area w/re-circulated air 1/n…
2. Super-spreader at choir: of 27 participants, 70% diagnosed w/COVID-19; 36% hospitalized; 21% ICU.

It was indoors w/no ventilation. Spread was likely through both big droplets that fall to the ground & airborne aerosols that float 2/n…
3. JAMA: super-spreader infects 23 on bus: "Airborne spread of SARS-CoV-2 seems likely to have contributed to the high attack rate in the exposed bus" The AC unit was set to "re-circulation mode" 3/n…
Read 11 tweets
9 Sep
As we approach 200,000 deaths, it's mind boggling that Vietnam has had just 35. Here's how they did it:

1. Early Action: After 1st case, Gov. established Steering Committee. Early school closure; suspended public events/transport, restricted travel. 1/4…
2. In't flights stopped in March (flights from China stopped in Jan) All people entering the country from the COVID-19 infected nations and those who had been in direct contact with a confirmed case were placed in quarantine 2/4
3. Aggressive contact tracing where those infected AND their contacts were subject to self-isolation. Communities, streets or buildings w/cases also quarantined. Nationwide lockdown was imposed and seriously enforced from April 1st to 15th. 3/4
Read 4 tweets

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