A laboratory operator wearing a protective gear handles patients' samples in a laboratory of the National Reference Center (CNR) for respiratory viruses at the Institut Pasteur in Paris on January 28, 2020. - The CNR analyses the tests for respiratory viruses among which coronavirus. The deadly new coronavirus that has broken out in China, 2019-nCoV, has so far killed 106 people and infected over 4,000 -- the bulk of them in and around Wuhan. (Photo by Thomas SAMSON / AFP)