A longtime leader of the anti-vaccine movement. A highly credentialed surgeon. A seven-term Florida congressman. A Fox News contributor with her own line of vitamins.President-elect Donald J. Trump’s eclectic roster of figures to lead federal health agencies is almost complete — and with it, his vision for a sweeping overhaul is coming into focus.Mr. Trump’s choices have varying backgrounds and public health views. But they have all pushed back against Covid policies or supported ideas that are outside the medical mainstream, including an opposition to vaccines. Together, they are a clear repudiation of business as usual.“What they’re saying when they...