Can an antibody blood test tell if you are immune to COVID-19? Our producer got the unusual opportunity to investigate her own blood to find out what exactly these “magic” molecules are, why public health professionals are eager to roll out antibody testing, and just what these antibody tests can — and can’t — tell us. Stream "Decoding COVID-19" NOW online or on the PBS Video app: https://to.pbs.org/2xnYanv | NOVA l PBS