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Chihuahua, Mexico is battling a severe measles outbreak, with 4,481 confirmed cases-a staggering 74% of the national total of 6,050. This alarming surge in cases is prompting urgent public health measures and raising concerns about vaccine coverage.
Measles Crisis Deepens in Northern Mexico
Table of Contents
A rapidly escalating outbreak is disproportionately impacting young children and straining healthcare resources.
- Chihuahua state accounts for 74% of Mexico’s measles cases and 87% of deaths.
- Children aged 0-4 are most affected, with an incidence rate of 14.99 per 100,000.
- Mexico has surpassed Canada and the US in confirmed measles cases in the Americas.
- A “red alert” is in effect in chihuahua due to the high concentration of infections.
As of the latest data, 23 measles-related deaths nationwide have occurred, representing 87% of the total. The incidence rate in the state has reached 113.0 cases per 100,000 inhabitants, significantly exceeding the national average of 4.54.
Young Children at Highest Risk
The measles virus is hitting the youngest population hardest. Children aged 0 to 4 years have been diagnosed with 1,559 cases, resulting in an incidence rate of 14.99 per 100,000 children. Young adults between 25 and 29 years old (690 infections) and children aged 5 to 9 (655 cases) are also significantly affected. The gender distribution is nearly even, with 51.2% of cases in women and 48.8% in men.
National Spread and “Red Alert”
The measles virus has now been detected in 29 states and 207 municipalities across Mexico. While cases are present in several regions, Chihuahua is currently under a “red alert” due to the concentration of infections. Other states with notable case numbers include Jalisco (516), Guerrero (237), Michoacán (227), and Chiapas (127).
Outbreak Timeline and Surveillance
The first confirmed measles case was identified during epidemiological week 5. Since then, the virus has continued to spread. The Special Epidemiological Surveillance System has identified a total of 14,735 probable cases, with 41% confirmed through laboratory testing. As of the latest report, 36 new infections were added to the national count. During epidemiological week 51, 172 cases were confirmed, and preliminary data from week 52 indicate 7 additional confirmed cases.
Regional and international Comparisons
Mexico is currently experiencing one of the highest levels of measles activity in the Americas. With 5,741 confirmed cases, Mexico surpasses both Canada (5,353 cases) and the United States (1,988 cases). The region as a whole has recorded 13,795 infections in 2025, highlighting the widespread nature of the outbreak across the northern continent.
Fatality Rates Vary by State
While the national fatality rate is 0.40, significant variations exist between states. Durango has a fatality rate of 2.50, and Sonora reports a rate of 0.94. These figures underscore the varying severity of the outbreak and the need for targeted interventions.
Public Health Response
health authorities are intensifying containment efforts, including mass vaccination campaigns and enhanced epidemiological surveillance. The public is strongly encouraged to seek vaccination, notably those in high-risk groups, such as young children and young adults.
Officials urge anyone experiencing symptoms-fever, rash, cough, coryza, or conjunctivitis-to seek immediate medical attention. Maintaining good hygiene practices and avoiding contact
