People would like to know whether their COVID-19 vaccine is protective enough or a previous infection will keep them safe. Experts warned that taking an antibody test isn’t a good way to find out. The tests were designed to show whether someone was recently infected with the coronavirus – not whether they have enough immune soldiers to prevent an infection. The level of antibodies needed to provide protection isn’t known. There are nearly 90 different antibody tests on the market, most of which measure something slightly different. All that means it’s anyone’s guess what the tests actually show about how protected someone is against COVID-19. Taking a test could give people a false sense of security, health experts said, or a load of unnecessary anxiety. To read the full story.