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Willy Spaan

@wjmspaan.bsky.social

Emeritus professor Virology University Leiden and former chair of the Leiden University Medical Center and Jeroen Bosch Hospital. http://linkedin.com/in/willy-spaan-7baa0211

163 Followers  |  178 Following  |  103 Posts  |  Joined: 06.06.2024  |  2.0356

Latest posts by wjmspaan.bsky.social on Bluesky

Prasad canโ€™t be trusted as he has spread so much misinformation

29.11.2025 19:10 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

An excellent summary

03.08.2025 08:38 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

There not a single piece of solid scientific evidence that points in the direction of a lab leak

03.08.2025 08:13 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Found this useful to learn more bsky.app/profile/mooc...

31.05.2025 23:02 โ€” ๐Ÿ‘ 70    ๐Ÿ” 15    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 0
Graphs showing 25 years of budgets for the National Institute of Health, NASA, and the NSF. In all cases, the proposed budget for next year is far, far below any year of the previous quarter century.

Graphs showing 25 years of budgets for the National Institute of Health, NASA, and the NSF. In all cases, the proposed budget for next year is far, far below any year of the previous quarter century.

There are 2 previous historical cases of countries destroying their science and universities, crippling them for decades: Lysenkoism in the USSR and Nazi Germany. The Trump administration will be the 3rd.
It's not just budgets but research, institutions, expertise, and training the next generation.

31.05.2025 04:43 โ€” ๐Ÿ‘ 15281    ๐Ÿ” 7908    ๐Ÿ’ฌ 455    ๐Ÿ“Œ 532
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Genetic tracing of market wildlife and viruses at the epicenter of the COVID-19 pandemic DNA of mammalian wildlife species susceptible to SARS-CoV-2 was detected along with SARS-CoV-2 and other viruses in environmental samples from animal stalls located at the market epicenter of the emer...

Talk by @flodebarre.bsky.social #Evol2025 clearly laying out the evidence for a market origin for SARS-CoV-2. Covering work from: www.cell.com/cell/fulltex...

30.05.2025 18:15 โ€” ๐Ÿ‘ 91    ๐Ÿ” 30    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 2
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With all due respect, there is no scientific evidence supporting a lab leak. All available data points toward a natural spillover event. Since the Spanish flu and HIV, this has been the most severe pandemic since 1918.

01.06.2025 08:39 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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#USUniversities are an adornment to humanity, and motivated or ignorant attacks on them should be mourned by thinking people of all nationalities.

scroll.in/article/1083...

Ramachandra Guha examines the wider implications of #DonaldTrump's attacks on American educational institutions.

01.06.2025 07:53 โ€” ๐Ÿ‘ 23    ๐Ÿ” 6    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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Trumpโ€™s Lie about Dead โ€œWhite Farmersโ€ Just Got Even More Grotesque That photo he brandished to Cyril Ramaphosa was from the Democratic Republic of Congoโ€”whose refugees the Trump administration is pointedly not welcoming to America.

Unreal: To sustain his lie about a "genocide" of "white farmers" while meeting with the South African president, Trump used a photo of war deaths in the Democratic Republic of Congo.

I looked into this a bit more. It's worse than it first appeared. 1/

(new piece)
newrepublic.com/article/1956...

23.05.2025 17:49 โ€” ๐Ÿ‘ 2115    ๐Ÿ” 906    ๐Ÿ’ฌ 62    ๐Ÿ“Œ 73

Historically, antigenic shift was tied to influenza, but emerging insights into coronavirus RNA recombination suggest it could also happen in non-segmented viruses.

24.05.2025 15:46 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Or RNA recombination targeting the Spike gene?

22.05.2025 13:32 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Community pushback grows over proposal to replace metric signs on I-19 The U.S. Department of Transportation is proposing to convert the kilometer-based signage along Interstate 19 to the standard U.S. system of miles, drawing criticism from the Green Valley community.

The stupidity and wastefulness of this administration is simply disgusting. This will cost a lot of money to do. 125,000 federal employees have been fired but we have money for this?

Absolute clown show.

www.kgun9.com/news/communi...

22.05.2025 13:26 โ€” ๐Ÿ‘ 55    ๐Ÿ” 10    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 1
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Vance says Roberts is โ€˜profoundly wrongโ€™ about judiciaryโ€™s role to check executive branch | CNN Politics Vice President JD Vance called Chief Justice John Robertsโ€™ comments earlier this month that the judiciaryโ€™s role is to check the executive branch a โ€œprofoundly wrong sentimentโ€ and said the courts sho...

Vance wants to dismantle the separation of powers, which is a fundamental principle of democracy. www.cnn.com/2025/05/21/p...

21.05.2025 17:46 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Exciting News โ€“ Nature Health Global Receives A Surprise 1:1 Challenge Fund Gift โ€“ DONATE NOW And Double Your Impact! - Nature.Health.Global The Nature Health Global Board is delighted to announce an unexpected $25,000 gift from an anonymous donor. The unrestricted gift is a 1:1 match Challenge

EXCITING NEWS โ€“ Nature Health Global is delighted to announce a SURPRISE dollar-for-dollar match โ€œChallenge Fundโ€ from an anonymous donor today

naturehealthglobal.org/exciting-new...

14.05.2025 21:00 โ€” ๐Ÿ‘ 19    ๐Ÿ” 14    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

While I applaud Europe taking a step to fund bringing scientific excellence to Europe, the ERCโ€™s current success rates at 10% for Europe based scientists is statistically at lottery levels. The total ERC budget should double across the board aiming at doubling funding rates.

16.05.2025 12:55 โ€” ๐Ÿ‘ 51    ๐Ÿ” 16    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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Improving the Safety and Security of Biological Research By the authority vested in me as President by the Constitution and the laws of the United States of America, it is hereby ordered: Sectionย 1. ย Purpose.

Two weeks ago a new Executive Order on "Improving The Safety and Security of Biological Research" was signed.

The EO purports to ban "dangerous gain-of-function research", however, it is much more wide-ranging than that, severely limiting life-saving research.

๐Ÿงต

www.whitehouse.gov/presidential...

16.05.2025 21:01 โ€” ๐Ÿ‘ 36    ๐Ÿ” 12    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 2

Excellent analysis. This Executive Order has far-reaching consequences, and I wonder if anyone involved truly understands the extent of its impact. If strictly implemented, it could actually make many people around the world less safe.

17.05.2025 14:23 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Exactly

17.05.2025 14:03 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

This man was an absolute hero through the peak(s) of the COVID pandemic.

16.05.2025 22:51 โ€” ๐Ÿ‘ 90    ๐Ÿ” 14    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Post image 17.05.2025 08:05 โ€” ๐Ÿ‘ 75    ๐Ÿ” 20    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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COVID vaccine protected kids from long COVID Instead of special protection against long COVID, vaccines kept children and adolescents from developing the condition by blocking COVID-19 infections in the first place.

An almost equally important impact on prevention of long Covid in children www.pennmedicine.org/news/news-re...

17.05.2025 13:13 โ€” ๐Ÿ‘ 155    ๐Ÿ” 38    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 1
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theconversation.com/vaccination-...

17.05.2025 13:11 โ€” ๐Ÿ‘ 1690    ๐Ÿ” 547    ๐Ÿ’ฌ 87    ๐Ÿ“Œ 40
twitter

If anyone needs it, here is a twitter thread from 2021 show why RaTG13 absolutely can't be the progenitor of SARS-CoV-2 because you would need to 'undo' all the mutations on RaTG13 that arose since its most recent common ancestor(s) with SC2: rambaut.github.io/twitter/ratg13

14.05.2025 07:38 โ€” ๐Ÿ‘ 23    ๐Ÿ” 9    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

Can someone name an opinion letter in a journal from 2020 that (1) reviews the then known features of newly sequenced SARS CoV-2 and its relatives (2) weighs ALL possible origins without excluding the possibility of various lab leak scenarios, (3) has not be shown to be wrong by subsequent data?

14.05.2025 19:08 โ€” ๐Ÿ‘ 15    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Profiles in cowardice. #BillCassidy owns every death, every illness that comes from this Administration. He is a coward who has betrayed his Hippocratic Oath. #RFKJr #publichealthmalpractice.

14.05.2025 18:06 โ€” ๐Ÿ‘ 355    ๐Ÿ” 57    ๐Ÿ’ฌ 8    ๐Ÿ“Œ 1

Jay Bhattacharya is so full of shit. He has been *extremely* vocal about this, including explicitly endorsing a movie that claims Fauci covered up a bunch of lab leaks (without evidence), *signing his name* on letters accusing my colleagues and me of fraud for our research on COVID Origins, etc.

15.05.2025 16:48 โ€” ๐Ÿ‘ 19    ๐Ÿ” 9    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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A Review of โ€œIn Covidโ€™s Wakeโ€: According to Laptop Class Professors, the Heroes of the Pandemic Were Laptop Class Professors The authors of the Great Barrington Declaration prevented fair and honest discussion by constantly spreading fake information. The authors of a new book don't care at all.

Discussed here.

sciencebasedmedicine.org/laptopclassb...

07.05.2025 20:43 โ€” ๐Ÿ‘ 180    ๐Ÿ” 28    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 2
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Exclusive: The inside story behind the search for the origins of COVID-19 An big screen documentary movie, an announcement, and an exclusive excerpt from "Lab Leak Fever", the definitive book unraveling the pandemic origin controversy

Guess the cat is out of the bag.

Today marks the beginning of the end of the false lab leak narrative.

Read what I have been working on over the last years:
www.protagonist-science.com/p/exclusive-...

05.04.2025 21:20 โ€” ๐Ÿ‘ 297    ๐Ÿ” 95    ๐Ÿ’ฌ 18    ๐Ÿ“Œ 21

@wjmspaan is following 19 prominent accounts