Monkeypox appears to recede, but risks and uncertainties linger

Nearly four months after the first report of monkeypox in the United States, the virus is showing promising signs of retreat, easing fears that it may spill over into populations of older adults, pregnant women and young children.

Supplies of the vaccine have improved, and federal health officials have begun clinical trials to gain a better understanding of who benefits, and how much, from both the vaccine and the drug used to treat those…