As India faces its biggest medical challenge, as people gasp for breath in several parts of the country amid the COVID-19 crisis, as the country ramp up vaccination to take on the threat, it's essential to look at where the country stands through the prism of the World Health Organisation. An opportunity to take a step back and speak to experts who have the interests of people around the world as the globe faces this unprecedented crisis. Two of the world's experts - Dr Maria Van Kerkhove, infectious disease epidemiologist, who is technical lead on COVID-19, and Dr Soumya Swaminathan, WHO chief scientist - throw some light on the crisis.