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SARS-CoV-2 pandemic origin

The origin of the SARS-CoV-2 pandemic, with debate between zoonotic spillover and lab leak hypotheses

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Jan 17, 2026
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was covid-19 caused by a lab leak in wuhan?

The question cannot be answered with certainty from available public reporting: no definitive "smoking gun" proving a Wuhan lab leak exists, and no conclusive proof that SARS‑CoV‑2 emerged naturally h...

Jan 19, 2026

What data and access has China refused or limited for international COVID‑19 origin investigators, and how has the WHO responded?

China has repeatedly limited or delayed sharing key datasets and access that investigators say are essential to reconstructing the earliest days of the pandemic—most notably raw patient-level records ...