All hypotheses on how the Covid-19 pandemic began remain open, the World Health Organization said, following an inconclusive four-year investigation that was hamstrung by crucial information being withheld.
source https://www.ndtv.com/world-news/world-health-body-says-all-covid-19-origin-theories-still-open-8778782#publisher=newsstand
source https://www.ndtv.com/world-news/world-health-body-says-all-covid-19-origin-theories-still-open-8778782#publisher=newsstand