OXFORD, ENGLAND – APRIL 03: A man in a mask walks past Christ Church after university students have been sent home and the tourists are staying away during the Coronavirus lockdown on April 03, 2020 in Oxford, United Kingdom. Even though the streets and college greens are empty, scientists are working hard behind the dormant dreaming spires. Researchers and scientists at Oxford University are at the forefront of the war against Covid-19. More than 20 departments from medicine to humanities are working on vaccine research and mapping. The Coronavirus (COVID-19) pandemic has spread to many countries across the world, claiming over 50,000 lives and infecting over 1 million people. (Photo by Christopher Furlong/Getty Images)