focus should not be on those who have already had covid. for example, a study from melbourne, australia, shows that people already infected will make antibodies for most of their lives. the study found two he thinks. one, that so-called memory control the blood looking for reinfection and two, bone marrow plasma cells produce antibodies for decades. studies from israel and the u.k. have similar findings. meanwhile, talk about missing the forest of the trees. there has been almost zero response to a rather astonishing revelation made by the head of our key health agency. here is the exchange. may 11th, capitol hill under questioning by senator richard burkes, 47 seconds and well worth it. watch. what percentage of the employees in your institute, your center, or your agency of your employees has been vaccinated?