Many transplant recipients were already required to be fully vaccinated and meet various other eligibility requirements prior to the outbreak of Covid-19. Furthermore, there is a specific reason the covid vaccine is even more sound.
Per USA today:
https://www.usatoday.com/story/news/factcheck/2021/10/20/fact-check-hospital-requiring-covid-19-shot-transplant-patients/6036157001/Patients undergoing an organ transplant must meet certain requirements to protect them before and after surgery, said Tracer and Dr. Deepali Kumar, president-elect of the American Society of Transplantation.
People on waitlists typically already are vaccinated to protect against infectious hepatitis A and B, pneumonia, shingles and the flu, Kumar told USA TODAY.
"Patients may also be required to avoid alcohol, stop smoking, or prove they will be able to continue taking their anti-rejection medications long after their transplant surgery," Tracer said. "These requirements increase the likelihood that a transplant will be successful and the patient will avoid rejection."
Preventing organ rejection generally requires taking immunosuppressive drugs, which work to quiet down the transplant recipient's immune system so it won't reject the new organ. But this silencing also leaves patients significantly more vulnerable to COVID-19 infection and death than the general population. A December 2020 study from France of more than 1,000 people hospitalized with COVID-19 found 18% of kidney transplant patients died, compared with 11% of nontransplant COVID-19 patients. In other studies looking not only at kidney transplant patients but other organs as well, this rate was between 20% and 30%.
Experts say it's important to be vaccinated before a transplant because the vaccine is less effective if administered after a transplant due to anti-rejection medications.A lower percentage of post-transplant patients develop a "demonstrable antibody response" from the vaccine compared with the general population, Dr. David Klassen, chief medical officer of the United Network for Organ Sharing, a nonprofit that manages the nation's transplant waiting list, told USA TODAY.