WASHINGTON — With monkeypox cases on the decline nationally, federal health officials expressed optimism on Thursday that the virus could be eliminated in the United States, though they cautioned that unless it was wiped out globally, Americans would remain at risk.

“Our goal is to eradicate; that’s what we’re working toward,” Dr. Demetre Daskalakis, the deputy coordinator of the White House monkeypox response team, said during a visit to a monkeypox vaccination clinic in Washington. He added, “The prediction is, we’re going to get very close.”