
WASHINGTON, June 3 (Reuters) - U.S. Health and Human Services Secretary Robert F. Kennedy Jr. said on Tuesday that Moderna has agreed to a true placebo-controlled trial of its new COVID-19 vaccine.
While noting that he was aware of concerns about the Food and Drug Administration's limited approval of the new mRNA vaccine for high-risk populations, Kennedy assured the agency will monitor and collect data throughout the trial for every adverse outcome.