Overview
- Sen. Rand Paul released internal Slack exchanges that show several authors of the 2020 Proximal Origin paper privately discussed the possibility that SARS-CoV-2 could have come from a laboratory and flagged emerging evidence they found troubling.
- Lead author Kristian Andersen and others wrote that parts of the paper were mistaken, including an overstatement that related bat-coronavirus work occurred widely when they noted it had been concentrated at the Wuhan Institute of Virology.
- Messages describe specific technical worries, including the virus’s furin cleavage site and a previously disclosed EcoHealth Alliance proposal that discussed inserting such sites into coronaviruses, which led some authors to reassess how plausible a lab incident might be.
- The exchanges show authors debated how to defend the paper’s public conclusion denying engineering, reported interactions with Dr. Anthony Fauci, and discussed curating records, while Nature Medicine has declined to retract or amend the original article.
- The disclosures deepen scrutiny of pandemic-era scientific advice and funding oversight and may prompt further congressional inquiries, journal review, and public demands for transparency about the evidence and decisions that shaped early messaging.