Can an antibody test tell you if your vaccine is still effective? With new data showing that vaccine effectiveness wanes over time, many are curious to know that they’re still protected from COVID-19. But some doctors caution that antibody tests are not a reliable indicator of immunity to COVID-19. Meanwhile, the debate over masks rages on. In Louisiana, a school board meeting was shut down by anti-mask protesters. Melissa Joan Hart and her son tested positive for COVID-19.