Monkeypox: What we know about the outbreak, vaccinations, and treatments

Health officials around the world are racing to curb an outbreak of monkeypox cases that has swelled into the thousands, deploying both vaccines and treatments for a disease that can lead to weeks of painful rashes and lesions for those infected.

While monkeypox infections have been seen before in the U.S. — in two travelers from Nigeria last year and in 47 cases that were linked to imported animals back in 2003 — the current outbreak is by far the largest recorded in American history. 

Here's what's known about the monkeypox outbreak and response: