PAHO issues alert to increase vaccination amid measles outbreak in the Americas

The Pan American Health Organization (PAHO) has issued an urgent epidemiological alert, calling on nations across the Americas to intensify measles vaccination campaigns. This directive comes in response to a significant surge in measles cases, which have tripled compared to the previous year, marking the highest incidence in the region in over two decades.

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The continent of America registers the highest number of measles cases in more than two decades.

According to PAHO, the Americas are currently facing a "very high" risk of public health challenges associated with measles. The organization reported 47,500 confirmed cases across 16 countries and 44 deaths in three nations so far this year. This figure dramatically surpasses the 15,000 cases and 32 deaths recorded throughout all of 2025. The majority of confirmed cases, approximately 95%, are concentrated in Guatemala, Mexico, the United States, and Peru.

PAHO attributes the alarming rise in cases to several factors, including increased international travel and large-scale public events, which facilitate the virus's spread to new areas. The alert also points to a rise in mortality rates and the impact on populations with limited access to healthcare services. Measles, known as one of the world's most contagious diseases, spreads through airborne droplets expelled when an infected person coughs or sneezes.

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The risk to public health associated with measles in the Americas is classified as 'very high'.

Symptoms of measles include high fever, cough, runny nose, conjunctivitis, and a distinctive skin rash. While often manageable, the disease can lead to severe complications such as pneumonia, encephalitis, blindness, and even death. PAHO emphasizes that vaccination remains the most effective method for preventing measles and curbing its transmission.

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Vaccination is the most effective way to prevent the disease and avoid its spread.