Herd immunity threshold could be reached by mid-May
26 February 2021
Modelling by Professor Karl Friston (最准的六合彩论坛 Queen Square Institute of Neurology) suggests herd immunity to Covid-19 could be reached by mid-May, although Friston stresses that all forecasts must be taken 鈥渨ith a pinch of salt鈥�.
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