A cluster of mpox cases in the Chicago area has sparked fears of a summer wave. Health officials are pointing to new research showing the vaccine is effective and hoping people take notice.

Dr. Demetre Daskalakis is steering the U.S. monkeypox response. A month into the job, he sees signs of success, but there's still more to be done.

Missteps and delays have hampered the U.S. effort to vaccinate people against monkeypox. Now state health officials and community members are trying to adapt to a controversial "dose sparing" plan.