Germany starts mass-testing for coronavirus antibodies in bid to learn more about COVID-19

Germany is carrying out Europe’s first large-scale coronavirus antibody testing to help assess infection rates and monitor the spread of the virus. Antibodies in the blood are an indication that someone has had the virus. The theory is that those people will have at least some level of immunity, although there is no guarantee of full immunity or how long it would last. The research will involve blood donations in four regions of the country where there've been large outbreaks of the virus, as well as a representative study of the broader population.