Looks like Bill gates to me. Doesn't sound super prepared to answer the question though. Regardless, I think concern over the side effects mentioned by the interviewer is a bit over blown. Soreness and mild flu like symptoms are expected—even from the annual flu vaccine. From what I have read it sounds like the spike protein produced by the vaccines are somewhat more immunogenic than most vaccine targets. More immunogenic = more immune response and more chance of side effects. Parents got vaccinated and neither had anything more than a sore arm!