TikTok might seem like a bastion of youth, fun dance moves, and fun challenges. But like most social media, it's rampant with misinformation and weaponized disinformation, especially about the COVID-19 pandemic. Dr. Katrine Wallace, an epidemiologist and professor at the University of Illinois at Chicago, joined TikTok for the same reasons we all did: We were bored during the lockdowns. What she found on the platform was so horrifying, she had to step up and fight it.

Alli and Lindsey talk with Dr. Kat about her rise to social media fame as a newly minted science communicator. Her TikTok videos debunk persistent myths about the pandemic, explain how viruses and vaccines work, and call out other medical professionals who insist on spreading dangerous content. She maps why human bias, poor educational standards, and algorithms that only serve sensationalism created a perfect storm of misinformation on TikTok, and what scientists (and regular people) are doing to fight back.

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