By Aditya Samal
(Reuters) – There is not sufficient evidence to recommend more than one COVID-19 booster shot a year for older people and those with weakened immune systems, an expert advisory group to the U.S. Centers for Disease Control and Prevention (CDC) said on Friday.
The COVID-19 working group of the CDC’s Advisory Committee For Immunization Practices (ACIP) supported an annual booster campaign, likely in the fall, especially for populations considered at high risk, Dr. Sara Oliver, a CDC official who heads the group, said during a meeting of the agency’s outside advisers.
The agency currently recommends older and immunocompromised people receive COVID booster shots more frequently since vaccine effectiveness usually wanes faster for those populations compared to younger people with robust immune systems.
In the spring of 2022, the CDC recommended immunocompromised and people over age 50 receive an additional…
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