조 바이든 행정부가 코로나19 백 접종 8개월 후 추가 접종(Booster Shot)을 권고할 예정이라고 뉴욕타임스가 보도했다. 양로원 거주자와 의료계통 직원들이 9월부터 추가 접종을 우선 순위를 맞을 것으로 보인다.

U.S. to Advise Boosters for Most Americans 8 Months After Vaccination

Nursing home residents and health care workers will most likely be the first to get booster shots, as soon as September, followed by other older people who were vaccinated last winter.

https://www.nytimes.com/2021/08/16/us/vaccination-booster-shots.html?