ScienceAm I immune to COVID-19?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience10/09/2020October 9, 2020Our immune systems protect us from pathogens and toxins by forming antibodies. They can make us immune to certain viruses, for example. But how can we test whether we are immune to COVID-19 or not? And how reliable are these tests?https://p.dw.com/p/3jfvxAdvertisement