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Eric Feigl-Ding Profile picture
@DrEricDing
Nov 25, 2021 • 18 tweets • 10 min read • Read on X
⚠️BREAKING—HOTEL CROSS TRANSMISSION OF #B11529—Traveler from South Africa🇿🇦 flew to Hong Kong🇭🇰 with new variant—but wasn’t discovered until 4th day of quarantine on 2nd PCR. Another guest across hallway cross-infected—only positive on 8th day on 4th PCR! Both Pfizer vaccinated🧵 Image
2) the viral load of these two with #B11529 in Hong Kong hotels were VERY high. PCR Ct values of 18 and 19!!! That’s insanely high considering they were negative on recent PCR tests. Damn, looks like vaccine evasion could be real with this variant.
3) and hell yes it’s very airborne. The hotel guests were in different room across the hallway from each other. Environmental samples found the virus in 25 of 87 swab across both rooms.
4) I think border and travel restrictions make sense. Especially since Hong Kong 🇭🇰 only caught the case because of a mandatory hotel quarantine. Which countries in the west still have that??? Almost none.
5) This #B11529 variant is bad bad bad. Scientists worldwide are worried. It has a very bad spike mutation profile and it is spreading fast across South Africa 🇿🇦— see thread 🧵 below 👇
6) 32 mutations in one spike protein is helluva a lot. Its “extremely high”. And it has real concerns because of the bad nature of these mutations too.
7) South Africa 🇿🇦 health leaders are extremely worried about #B11529. We expect the WHO will issue a new Greek name to it soon - likely the #NuVariant.
8) the #B11529 Nu variant seems to have a lot of antibody escape properties— escape in multiple epitope classes of the antibody. This is a really bad thing.
9) the spread across South Africa is quite sudden and widespread… and change from 1% positivity to suddenly 30% in a week!
10) cases still low but this surge in #B11529 is no joke. Take it seriously. Image
11) Let’s finally look at the relative growth plotted by @jburnmurdoch - cases of #B11529 surging much faster than Delta. Caveat is that cases are low. But this would be very worrisome if confirmed in the coming days and weeks. Stay tuned. Stay safe. 🙏 Image
12) 500% more infectious for #B11529 is jaw dropping if it is true. Let’s hope the early data is wrong. We actually REALLY REALLY want this early data to be wrong … because if it’s not wrong… it’s cataclysmic. See new 🧵 below.
13) Experts estimate that South Africa 🇿🇦 is already 72% infected. Natural infection clearly isn’t enough to stop #B11529 currently.
14) Israel’s testing has now found 3 cases of #B11529 - the second country outside of Africa to have identified it. This is bad. Israel 🇮🇱 and HK are very strict. I just worry for the non strict quarantine and entry testing countries now.
15) If you have found my threads 🧵 helpful, the please consider subscribing for special updates in near future:

➡️ drericding.substack.com
16) Latest models suggest #B11529 could be as much as 500% more infectious. That is indescribably bad. See thread 🧵
17) The new name for the #B11529 variant is OMICRON—which the @WHO warns has higher risk of reinfection! #Omicron
18) WHO mentioned reinfection risk (ie natural infection not a good idea)— it’s based on lots of research in bad mutations among the 32 mutations that #B11529 #OmicronVariant has in its spike protein.

Figure by @jbloom_lab.
jbloomlab.github.io/SARS2_RBD_Ab_e… Image

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More from @DrEricDing

Eric Feigl-Ding Profile picture
Feb 7
BAM—called it again—there is clear proof of cat-human household transmission of bird flu. CDC scientists posted the data—but suddenly deleted soon afterwards. CDC is being blatantly muzzled. Image
Image
2) C.D.C. Posts, Then Deletes, Data on Bird Flu Spread Between Cats and People

The data, which appeared fleetingly online on Wednesday, confirmed transmission in two households. Scientists called on the agency to release the full report.

Gift 🎁 link

nytimes.com/2025/02/06/hea…
3) I’ve been reading the tea leaves 🍃 lately— it’s quite clear they know there is household transmission of bird flu. Hence the final alert issued by CDC before Trump took over was to get national testing of Flu A to see if bird flu in hospitals nationwide. See important 🧵
Read 5 tweets
Eric Feigl-Ding Profile picture
Feb 5
⚠️CDC & NY State is now recommending the IMMEDIATE testing & subtyping of all hospitalized flu A cases & unknown/suspected flu cases—in order to identify human bird flu. ➡️This implies CDC believes avian flu has now crossed into wide community transmission
nyc.gov/assets/doh/dow…Image
Image
2) Testing is good. But the widespread testing shows urgency.

“CDC is now recommending ordering subtyping for all influenza A-positive specimens collected from hospitalized individuals within 24 hours of hospital admission” Image
3) And the memo says start testing with ANY SUSPECTED hospitalized cases of seasonal influenza as well. That’s quite broad.

The memo also doesn’t say NY residency required - thus are they implying anyone outside NYC (out-of-state too?) can also send specimens in to their lab. Image
Read 12 tweets
Eric Feigl-Ding Profile picture
Feb 4
Trump WH has ordered CDC scientists to retract all papers under submission to medical journals containing banned terms— must be scrubbed from manuscripts, including even basic words like “gender”. Retraction even applies to accepted papers in press for imminent publication. Image
Image
2) The CDC has instructed its scientists to retract or pause the publication of any research manuscript being considered by any medical or scientific journal, not merely its own internal periodicals

@jeremyfaust

medpagetoday.com/opinion/faustf…
@jeremyfaust 3) it’s wild that even the terms “gender” and “pregnant person / people” must be scrubbed as well. Kinda wild honestly. Image
Read 4 tweets
Eric Feigl-Ding Profile picture
Feb 1
🛑CANCELLED—“Research on Women’s Health” funding website of the NIH. Image
2) here is the page that is now deleted. Funding opportunities in women’s health research of ORWH site. Didn’t Trump say they at least recognize women as a gender? Weird.

orwh.od.nih.gov/research/funde…
3) It’s a bloodbath today for CDC websites too…
Read 4 tweets
Eric Feigl-Ding Profile picture
Feb 1
🪓DELETION UPDATE—More than 1,000 pages are now deleted from websites of CDC, National Institutes of Health, and other sites of the Department of Health and Human Services, according to a new WSJ analysis—including many **vaccine recommendation** scientific pages! Image
2) CDC’s vaccine advisory committee webpage… now ❌ DELETED ❌ Image
3) To be clear, while the main ACIP website is still up (generic committee info), the “VACCINE SPECIFIC RECOMMENDATIONS” website of ACIP has been **deleted**. That key page is the one with the actual public health info for vaccines. Feel free to verify:

cdc.gov/acip-recs/hcp/…Image
Read 9 tweets
Eric Feigl-Ding Profile picture
Jan 31
⚠️CDC WEBSITES DELETED—Multiple CDC websites and datasets related to HIV, LGBTQ people, youth health behaviors and more have been removed after the agency was directed to comply with an executive order from President Trump by 5pm deadline. Wildest is taking down even HIV pages! Image
Image
2) Like, why then hell did the “CAUSES” of HIV even get deleted??? Makes zero sense. Why is Trump WH wanting to block how to stop HIV???
cdc.gov/hiv/causes/ind…Image
3) also deleted: CDC’s Youth Risk Behavior Surveillance System, which includes data from a national survey, has disappeared. so have parts of the Agency for Toxic Substances and Disease Registry’s Social Vulnerability Index and the Environmental Justice Index.
Read 9 tweets

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