Ideally, those cancer patients who want the shot could get it at their cancer centers rather than in a mass distribution site. But a bumpy rollout and age restrictions have frustrated many people with cancer. Still, if the shot is offered, Dr. Brawley recommends it to his patients in active therapy and to those in follow-up. Certainly, they may not have as strong a response as someone who has an intact immune system; however, they will get some protection and will not be harmed because the current vaccines from Moderna and Pfizer are not produced from live virus (as measles, rubella, mumps and smallpox had been). Live virus vaccines must be avoided by the highly immunocompromised.