People walk through a temporary emergency hospital set up at the Trade Fair of Vienna to treat coronavirus patients. (Georg Hochmuth/Pool/EPA-EFE/Shutterstock)

A team of firefighters and volunteers turned a 15,000-square-foot hall in a convention center in Vienna into an 880-bed coronavirus hospital over the course of a weekend.

Soldiers in Germany, France and Spain have been deployed to help build similar temporary facilities for thousands of patients. Across Europe, tens of thousands of nurses and doctors are being graduated early or called back from retirement.