248,000 Buenos Aires Residents At-Risk for Measles

According to the Pan American Health Organization (PAHO), a total of 21 measles cases have been confirmed in the Autonomous City of Buenos Aires and the Province of Buenos Aires, Argentina. 

As of April 16, 2025, three of these measles cases were imported and 18 were locally acquired.

The Buenos Aires National Health Service has reported that the majority of cases are concentrated in Commune 14, which is home to approximately 248,000 people.

The PAHO stated that the index case of this outbreak was reported in January 2025 in a child with a history of international travel.

Twelve of the cases were confirmed with genotype B3, and one of the imported cases, associated with recent international travel to Thailand, was identified as genotype D8.

Throughout 2025, a total of 2,318 measles cases, including three deaths, have been confirmed in six countries in the Region of the Americas, which includes the United States.

This PAHO data represents an 11-fold increase compared to the same period in 2024.

The PAHO wrote 'Measles is a highly contagious, airborne viral disease that can lead to severe complications and death. This disease is preventable with two doses of the MMR vaccine, which is highly recommended for most people.

As of April 29, 2025, the regional risk is currently assessed as high, while the global risk remains moderate.'

However, the Argentine Republic was not included in the U.S. CDC's recent Global Measles Advisory that identified 58 countries reporting measles outbreaks.