Both the US Centers for Disease Control (CDC) and the World Health Company (WHO) are reassessing their assistance on face masks, as professionals race to discover methods to eliminate the extremely contagious virus.
Covid-19 is carried in air-borne beads from people coughing or sneezing, but there is some conflict over how far people ought to distance themselves from each other, and whether masks work when used by the public.
The WHO advises that ordinary face masks are only effective if combined with mindful hand-washing and social-distancing, and so