FDA的这一决定得到了《新英格兰医学杂志》周三发表的一项研究结果的支持。这项研究表明，接种第三针Moderna疫苗显著提高了55%器官移植患者的Covid抗体水平。研究发现，接受安慰剂的对照组只有18%的人产生了所需的抗体水平。
Advisers from the Centers for Disease Control and Prevention in the United States voted for a recommendation that people with impaired immune systems should be vaccinated with a third dose of Covid.
Eleven members of the CDC Immunization practice Advisory Committee voted on Friday to support a third dose of the vaccine for people with impaired immune systems. This proposal is subject to final approval by Rochelle Walensky, director of the Centers for Disease Control and Prevention.
The US Food and Drug Administration expanded its emergency use authorization for Moderna Inc and Pfizer Inc-BioNTech vaccines late Thursday to allow enhanced injections. Patients with organ transplants and similar impaired immune systems will be eligible for booster injections.
FDA's decision was supported by the results of a study published Wednesday in the New England Journal of Medicine. The study showed that the third dose of Moderna Inc vaccine significantly increased the Covid antibody level of 55% of organ transplant patients. The study found that only 18% of people in the control group who received the placebo produced the required antibody levels.
