Updated: Share Article AAA Swab samples were lifted from the sixteen persons who returned from the United Kingdom to the district in the last two weeks, and they were home quarantined on Wednesday. All the 16 had tested negative in Britain. They boarded the flight to Bengaluru and arrived here from December 15. However, swab samples were not lifted from them at the airport and they had reached various destinations in the district by car. Following the emergence of a mutated variant of the coronavirus in the U.K., the Union Health Ministry had directed the health departments to isolate them and lift swab samples for testing.