As we anguish after witnessing millions of Indians not wearing face masks or wearing them all wrong in public places amid surge in Covid-19 figures, a study led by Indian-American researchers has warned that even people wearing the combination of face shields along with masks with exhalation valves are not safe and can easily get the deadly coronavirus.

When someone carrying the Covid-19 virus coughs, aerosolised droplets expelled with the jet are able to move around the face shield visor with relative ease.