WASHINGTON — The U.S. took the unprecedented step Monday of cutting the number of vaccines it recommends for every child — a move that leading medical groups said would undermine protections against a half-dozen diseases.
The change is…

WASHINGTON — The U.S. took the unprecedented step Monday of cutting the number of vaccines it recommends for every child — a move that leading medical groups said would undermine protections against a half-dozen diseases.
The change is…