worby says this is significant. if the virus had leaked from a lab, you would only expect one strain. but if it jumped from animals, this could have happened multiple times. explaining the two lineages, he says. in the early months of the pandemic, he was open to all theories of origin, including an accidental lab leak. if it had come out of the lab accidentally. it could have been a super spreader in the subway, the supermarket movie theater, but it seems the early clusters are around that wet market or it could have been spreadingat the lab itself, which there's no evidence of it would be great if we could fully discern the origin and the chain of events that led to the pandemic that will help us put in place. preventive measures. the sooner we start to address some of the potential vulnerabilities, the safer we will all be globally. that concerns certainly weighs on the mind of maria van kirk off head of the w. h o s response to covid 19, including the hunt for its origin. we will not stop the pursuit of understa