Doctors battling on the frontline against COVID-19 are facing a situation they could hardly imagine. For young doctors like Christian Vigil, COVID-19 is a sobering experience. The 26-year-old Spanish finds himself working in conditions commonly seen in natural disasters.

The heavy workload and fear of infecting others add to the stress of the Madrid-based doctor. Thousands have died in Spain, making the country the second in the world with the highest death toll - and there is still no vaccine.