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Pope's Visit Sparks Measles Alert in South America
14 Nov
Summary
- Measles cases are surging in South America, posing a risk during papal gatherings.
- Vaccination rates are below the 95% threshold needed for herd immunity in the region.
- Health authorities are intensifying surveillance and vaccination campaigns to prevent spread.
Health authorities in South America are closely monitoring for a measles outbreak during Pope Leo XIV's visit, as cases have significantly increased this year. The Pan American Health Organization (PAHO) has deemed the public health risk "very high" due to a nearly five-fold increase in cases compared to the previous year. This surge, with 57,666 confirmed cases in the Americas by the end of October, has resulted in 81 deaths so far in 2026.
Countries like Uruguay, Argentina, and Peru are implementing enhanced surveillance and vaccination efforts. Uruguay has focused on updating vaccination schedules, aiming for high vaccination rates. However, vaccination coverage in Peru and Argentina remains below the 95% target necessary for community protection, leaving many vulnerable. Argentina's healthcare budget cuts have further raised concerns about the effectiveness of immunization campaigns.
Measles is highly contagious and particularly dangerous for infants and children. While an effective vaccine exists, two doses are required for full immunity. The Pope's trip, which includes visits to cities like Lima and Buenos Aires, is a cause for concern given the low vaccination rates and rising case numbers across the continent.
