Measles jumps borders in North America with outbreaks in Canada, Mexico and US
- North America's largest measles outbreaks have surged since fall 2024, affecting Ontario, Chihuahua, Texas, and New Mexico with over 2,500 cases reported.
- The outbreaks began in Ontario in fall 2024 and escalated in Texas and New Mexico by late January 2025, with cross-border spread linked to mobile populations and imported virus strains.
- Chihuahua's outbreak started from an infected 8-year-old Mennonite who spread measles at school, while El Paso and Ciudad Juarez report cases without direct links to Chihuahua's cluster.
- Ontario's cases exceed 1,020, Texas has up to 663 cases with El Paso reporting 38, Chihuahua reports 786, and the cost per U.S. Case response ranges $30,000 to $50,000 as Dr. Ocaranza affirmed, “Diseases know no borders.”
- Health officials stress the need for a 95% vaccination rate to prevent outbreaks, conducting vaccination clinics amid ongoing concerns about the high contagiousness and regional spread of measles.
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99 Articles
The measles outbreak in Chihuahua totals more than 700 cases
Health authorities have reinforced measles vaccination in Chihuahua, where an outbreak originating in Texas has caused hundreds of infections. Contagion originated in mid-February, and the first case was documented in an eight-year-old boy without vaccines from a Mennonite community who had traveled from Texas to visit family members.
'Sharp rise' in Ontario measles cases with 223 new infections since last week
TORONTO — Public Health Ontario is reporting 223 new measles cases since last week as the spread in its southwestern region grows. That brings the total number of people infected in the province to 1,243 since an outbreak began in October.
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