WASHINGTON (AP) — U.S. health officials on Tuesday authorized a new monkeypox vaccination strategy designed to stretch limited supplies by allowing health professionals to vaccinate up to five people — instead of one — with each vial. The so-called dose-sparing approach uses just a fraction of the typical amount of the Jynneos vaccine and administers it with an injection just under the skin rather than into deeper tissue. Recipients would still get two shots spaced four weeks apart.