Vaccine safety experts say more research into the side effects would be welcome yet question whether the health secretaryβs effort will be grounded in science.
Senator Patty Murray, a former chair of the Senate health committee, is forming a group of experts to examine how to insulate the C.D.C. from political interference.
A protest outside the Centers for Disease Control and Prevention last year after employees were laid off. Beyond staff reductions, the agency also faces a leadership vacuum.
Federal projects are rolling out A.I. agents that offer therapy and prescribe medicine, raising concerns about safety and the influence of venture capital investors.
Under a new partnership, the Defense Department would play a larger role in biodefense and pandemic preparedness. Democrats warned it could allow a Pentagon cash grab.