GENEVA, Switzerland (AFP) — Researchers said Thursday they had begun collecting blood samples and interviewing people across Switzerland to determine what proportion of the population has antibodies to the novel coronavirus, and their level of immunity. The new research programme, called “Corona Immunitas”, said in a statement that over the next six months it would collect epidemiological data on immunity to the SARS-CoV-2 virus, which causes COVID-19. The deadly disease has so far killed nearly […]