COVID-19 virus has been developed by researchers at the University of Birmingham, using materials already cleared for use in humans, the varsity said on Thursday.A team in the University’s Healthcare Technologies Institute formulated the spray using compounds already widely approved by regulatory bodies in the UK, Europe and the US.The materials are already widely used in medical devices, medicines and even food products.This means that the normal complex procedures to take a new product to market are greatly simplified, so the spray could be commercially available very quickly.A pre-print (not yet peer-reviewed) study describes cell culture experiments designed to test the ability of the solution to inhibit infection.