Woman lancing her finger to get a blood sample for a Covid-19 coronavirus antibody test. The test will detect if she has been infected with the new coronavirus SARS-CoV-2. SARS-CoV-2 causes a respiratory infection (Covid-19) that can lead to fatal pneumonia. The virus emerged in Wuhan, China, in December 2019 and spread worldwide infecting millions of people and causing hundreds of thousands of deaths. This test is part of UK Biobank's research into SARS-CoV-2 that involves testing an individual's blood each month for six months for Covid-19 antibodies. Photographed in the UK, in May 2020.