Resources with keywords: mmr
40 U.S. jurisdictions affected. 93% of cases are outbreak-associated, reflecting sustained community transmission that increases HCW exposure probability in emergency departments and outpatient settings. Hospital infection control programs should activate measles exposure response protocols and review airborne infection isolation room (AIIR) availability. 9 cases in international visitors documented, reinforcing airport and port-of-entry health screening relevance.
U.S. mumps cases decreased significantly after the mumps vaccine program began in 1967, but they have increased since 2006.
Stanislawski E, Romero A, Holzinger N, et al.
In January 2025, a large measles outbreak began in a west Texas community and quickly spread to nearby jurisdictions, including New Mexico. The New Mexico Department of Health (NMDOH) eventually reported 99 outbreak-related measles cases, approximately one half of which occurred in adults.
The CDC said 976 of the US cases were in 26 states, while six are related to international travel. The agency also confirmed seven new outbreaks in 2026, compared with 49 that began in 2025.
Wastewater surveillance testing for measles can alert public health authorities to possible local measles transmission before and during a measles outbreak and help guide public health preparedness and response.
During a June 11–September 26, 2024, measles outbreak in Oregon, a retrospective analysis of archived regional wastewater data collected during March 24–September 22, 2024, detected wild-type measles virus in 20 of 94 (21.3%) samples. The first detection of measles virus in wastewater was in a sample collected on April 3, 2024, which preceded the first confirmed measles case by 10 weeks.
The Pan American Health Organization (PAHO) has notified the Public Health Agency of Canada (PHAC) that Canada no longer holds measles elimination status. PAHO’s Measles and Rubella Elimination Regional Monitoring and Re-Verification Commission reviewed recent epidemiological and laboratory data, confirming sustained transmission of the same measles virus strain in Canada for a period of more than one year.
provides charts/graphs of updated measles cases
Data on measles cases/outbreak will be updated every Wednesday. Includes community resources (toolkit, care of children with measles) map, history of measles outbreaks.
The CDC updated its warning about the risk of contracting measles while traveling, after the agency received at least 62 reports of travelers who were contagious while flying into the U.S. or within the country.
