The joint WHO-China report on the origins of Covid-19 comes to four conclusions, and none are definitive. They are essentially preliminary assessments, reports BBC.
The initial stagesWhat the 120-page report does make clear is that the WHO team was not able to get a clear picture of the crucial weeks and months before early December 2019, when the first known Covid cases were reported here in Wuhan.
A lack of access to blood samples from donors in the city and swab samples from adults, in...
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