Switzerland's Roche joins race to make coronavirus antibody tests

ZURICH (Reuters) - Swiss drugmaker Roche aims by next month to offer blood tests to identify those who had been infected with the coronavirus, potentially helping inform locked-down nations of who might have some immunity and be able to resume work or contact with the public.The Basel-based company said on Friday it wants to make the antibody test available by early May in countries that accept European CE regulatory standards, and is seeking U.S. Food and Drug Administration emergency..