myeloma, it is a cancer of the very cells in the body that make antibody dis. something most people have heard of by now. you have the plasma cells that are affected and oftentimes you're getting medications to treat the cancer. that can suppress your immune systems as well. he is one of the most vulnerable. one thing i want to show you quickly, when we look at people who get vaccinated who have this, you find that about 45% of them only really have some sort of adequate response to the vaccine. so less than half, wolf. 33% have no response. 22% have a partial response. so he fell under that category of people with who were immunocompromised and would have been a candidate for a booster. and he was supposed to get a booster. >> was he too ill to get that scheduled booster shot over these past few weeks? >> yeah.