A significant decrease in measles-related deaths has been witnessed in the current century due to extensive global vaccination efforts. However, the World Health Organization reported a notable increase in measles cases in 2024. Despite a lower death toll, the number of cases rose to an estimated 11 million last year, marking an increase of nearly 800,000 compared to 2019 before the onset of the COVID-19 pandemic.
Dr. Kate O’Brien, WHO’s director of immunization, vaccines, and biologicals, likened measles to a warning signal for immunization programs. She emphasized that the highly transmissible nature of the disease makes even slight declines in vaccine coverage capable of triggering outbreaks, akin to a fire alarm responding to detected smoke.
Warning of potential rises in other vaccine-preventable diseases such as diphtheria, whooping cough, and polio due to gaps in routine vaccine coverage, Dr. O’Brien pointed out the necessity of maintaining high vaccination rates. Measles deaths have plummeted by 88% since 2000, with the current figure standing at 95,000 in 2024, according to Diana Chang Blanc, the unit head for WHO’s essential program on immunization.
The decline in measles-related fatalities is attributed to a higher incidence of infections in middle-income nations, which have a lower fatality rate compared to low-income countries where inadequate nutrition and limited healthcare access contribute to higher mortality rates among children. Children in conflict-stricken regions are particularly vulnerable to measles, with potential severe outcomes including brain infections leading to permanent disabilities like deafness and blindness.
Canada recently lost its measles elimination status due to gaps in public health measures that enabled the transmission of the virus for an extended period. The country experienced over 5,000 measles cases in a widespread outbreak that spanned multiple provinces, resulting in two infant deaths. Dr. Brian Ward from McGill University Health Centre highlighted the importance of effective communication, building trust within undervaccinated communities, and combatting misinformation to regain measles elimination status.
The World Health Organization cautioned against severe funding cuts impacting the Global Measles and Rubella Laboratory Network and national immunization programs, potentially widening immunity gaps and fueling more outbreaks in 2026. Meanwhile, the U.S. government indicated its intention to withdraw from WHO, with significant reductions in funding affecting numerous countries and critical health programs.
