Fig. 1.

Data collected online from European Centre for Disease Prevention and Control daily database, comparing four countries (China, USA, UK, and Brazil) with another four countries (Spain, France, Turkey, and India) which had different policies on face masks within the initial 3 months of their relative outbreaks. Data began from the 100th reported case in each country. The solid line shows that the reported data and the dashed lines are three-parameter fit smooth curves fitted from day 1 up to day 10 after the imposition of movement restrictions and green dashed curves are a three-parameter fit to the remainder of the data. The relative dates of facemasks being mandate are depicted by a vertical dashed line, where the solid vertical line shows the relative date of the national lockdowns