A Chinese military scientist who was reportedly thrown to his death from the roof of a Wuhan institute is at the centre of mounting evidence that the Covid pandemic resulted from a lab leak.

Intelligence obtained by members of the US Senate reveals that Zhou Yusen filed a patent for a Covid-19 vaccine on February 24, 2020, barely a month after China put Wuhan into lockdown because of the outbreak.

US vaccine developers told investigators that it would have been impossible to have generated the data cited in the patent so swiftly – it would have taken about three months’ work, meaning that scientists at the Wuhan Institute for Virology were secretly working on a Covid vaccine in November, two months before Beijing told the world about the pandemic.

[One has to wonder if Beijing told the military to make sure there were no loose lips — and no loose ends, either. — Ed]