Danish MD/PhD. Infectious disease physician. Covid Fact checker. Misinformation slayer. Feared/hated by anti-vaxxers and Covid grifters alike.

Joined February 2022
Americans, you are okay with these threats against public health scientists? Should this be allowed on social media? Who is fake doctor @drseanmullen blaming? Scientists all over the world, presumably?
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Who is @19joho bullying now? Jonathan, you are the one treating this pandemic like a game. Like a quest for likes and clicks. You are like a little boy playing with matches. Like a monkey with a machine gun. USA, please get these influences out of science!
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Found on USA social media October 2025. A victim of #misinformation.
Went to a dine-in restaurant for the first time since Covid began, with “went” being literal because I stayed masked the entire time and took my meal to go (so the only point of my being there was to socialize) It actually worked well. 🤷🏻‍♀️ And it was a good example of boundaries!
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The plant doctor has spoken.
If SARS2 doesn’t kill you, it’s sequelae almost certainly will.
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Translation: "Every public health agency on the planet is lying to you!" I would love to hear how everyone colluded to make this great conspiracy happen.🤣
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What's your impression of Bluesky? It is billed as a kinder Twitter, but is that true? I imagine all the same bullies have accounts over there too, but maybe I am wrong.
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covid is oncogenic, cancer causing.
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Maybe I am too optimistic, but I don't think a social media bully like @19joho would get any traction in Europe. Thankfully, his kind is a largely American phenomenon after the pandemic. Always white, male, middle-aged. Always 100% aggression, drama and fear.
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So much anti-vax and Covid extremism to fact check tonight. I am not sure I have the energy. Are there really no sane doctors left on Twitter? Did they all get bullied and left? USA, sometimes I feel like you deserve RFK.
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Infectious Diseases Scandinavia retweeted
Jonathan, stop trolling scientists on social media. USA, despite what these influencers are telling you, scientists and public health officials are not your enemy. Listen to people who treat and study infectious diseases. Don't listen to people who benefit from fear and anger.
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Infectious Diseases Scandinavia retweeted
Replying to @ID_Denmark
That’s a familiar memory. The quiet rational middle ground experts were ignored in 2020. It will be worse next time
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When the next pandemic hits, I am 100% sure USA domestic politics will trump science. It will be like this: - One camp will greatly exaggerate risks and call for mandates and closures. The other will minimize/ignore. - Sensible experts in the middle will be afraid to speak up.
I say that the US is not prepared for the next pandemic Overwhelming response on here is "yay! Great!" Good luck to you all
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I don't follow any of these people. It is very impressive how Twitter is able to detect medical/scientific misinformation and present them to my account like this. Also a great representation of anti-science America.
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Jonathan, stop trolling scientists on social media. USA, despite what these influencers are telling you, scientists and public health officials are not your enemy. Listen to people who treat and study infectious diseases. Don't listen to people who benefit from fear and anger.
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Fake doctor @drseanmullen is witnessing a "population-level immune deficiency". To hammer home the point, he wants you to know that it's not sexually transmitted...🤣 Whatever he is selling you, don't buy it!
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Attacking doctors and scientists is a particularly unpleasant part of USA anti-science movement.
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Infectious Diseases Scandinavia retweeted
Replying to @19joho
@19joho is going easy on Denmark today. Usually, he accuses us of "wanting to infect children" by opening our schools in 2020. Throwback to when he tried to argue with me about this (a Danish doctor who actually treats patients with Covid...) xitter.cf/ID_Denmark/status/1811…
Yesterday, I had the deeply uncomfortable experience of being attacked by social media bully @19joho. A few thoughts and summary in this 🧵.
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Found on USA social media... Translation: "every health agency in the entire world is lying to me".
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"I block anyone who presents data or arguments, but I don't like when scientists block me!" - @19joho This guy made a goldmine out of USAs anti-science wave. I wish more people would speak out against these anti-science influencers.
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