Overview
- CDC data show 34 mumps cases across 11 U.S. jurisdictions as of late February, indicating a limited but real uptick.
- Maryland health officials issued an alert after logging 26 cases this year as of February 19, including 19 confirmed and seven probable.
- Berkeley High reported a second case believed to have been contracted on campus on February 19–20, raising exposure risk from low to moderate.
- Two MMR doses reduce mumps risk by about 86%, yet protection can wane and breakthrough infections can occur in schools, colleges and other close‑contact environments.
- Public health guidance urges verifying MMR status, catching up on missed doses and, during defined outbreaks, considering a third dose for people at increased risk.