America at Risk of Losing Sarampión-Free Status Due to Outbreaks in Canada, Mexico, and US

Web Editor

October 6, 2025

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Background on the Situation

The Americas are at risk of losing their status as a sarampión-free zone, according to the Director of the Pan American Health Organization (PAHO), Dr. Jarbas Barbosa, as the highly contagious disease continues to spread in Canada, Mexico, and the United States. For a country experiencing an outbreak to regain its sarampión-free status, it must have zero cases within a 12-month period. This deadline is approaching for Canada by the end of this month, while the United States and Mexico have until January and February, respectively.

Impact of Declining Vaccination Rates

Dr. Barbosa highlighted that the three countries risk missing these deadlines, which would strip the Americas of its sarampión-free status and delay the broader global goal of a sarampión-free world by 2030. The decline in vaccination rates is the primary reason for the spread of the disease.

Addressing Vaccine Concerns

When asked about policy changes in the United States, where Health Secretary Robert Kennedy Jr., a vaccine skeptic, has reviewed the immunization recommendation system, Dr. Barbosa refrained from criticizing any specific country. However, he emphasized the importance of accurate public information to prevent a decline in vaccination rates.

Debunking Vaccine Myths

Dr. Barbosa stressed the need to adhere to scientific evidence, specifically addressing misconceptions such as a link between vaccines and autism. “There is no evidence supporting a relationship between vaccines and autism,” he clarified, contradicting previous claims by vaccine skeptics including Kennedy.

Vaccination Threshold for Sarampión Prevention

PAHO, the American branch of the World Health Organization (WHO), asserts that at least 95% of the population must be vaccinated to prevent sarampión spread, a viral infection causing fever and a distinctive rash that can lead to severe complications.

  • Canada: 92% of the population has received the first dose, while only 79% have completed the series required for full protection.
  • This year, Canada has reported over 5,000 sarampión cases and two deaths, including a newborn in Alberta.
  • Despite decreasing case numbers, Canada has limited time to demonstrate complete transmission halt.

Sarampión Outbreaks in the US and Mexico

Both the United States and Mexico have experienced significant sarampión outbreaks this year, with thousands of cases and a few fatalities.

The Americas regained their sarampión-free status only in 2024 after a Brazilian outbreak was contained. Although the United States is withdrawing from the WHO, it remains a member of PAHO.

Gavi’s Efforts to Combat Sarampión

Sania Nishtar, CEO of Gavi—an organization that supports low-income countries’ vaccination campaigns—told Reuters that Gavi plans to launch four major national campaigns by the end of this year to protect children from sarampión, in collaboration with Nigeria, Pakistan, Afghanistan, and the Democratic Republic of Congo.

However, Gavi faces budget cuts due to global aid reduction. The United States plans to completely withdraw its annual $300 million funding, citing concerns about Gavi’s disregard for safety without providing evidence.

Key Questions and Answers

  • What is the risk to the Americas’ sarampión-free status? The Americas risk losing their sarampión-free status due to outbreaks in Canada, Mexico, and the United States.
  • Why are vaccination rates crucial in controlling sarampión? Declining vaccination rates are the primary reason for the spread of sarampión, a highly contagious viral disease.
  • What is the scientific consensus on vaccines and autism? There is no evidence supporting a relationship between vaccines and autism.
  • What percentage of the population needs to be vaccinated to prevent sarampión spread? At least 95% of the population must be vaccinated to prevent sarampión spread.
  • What are Gavi’s plans to combat sarampión? Gavi intends to launch four major national campaigns by the end of this year to protect children from sarampión in collaboration with several countries.
  • Why is the United States withdrawing funding from Gavi? The United States plans to completely withdraw its annual $300 million funding from Gavi, citing concerns about the organization’s disregard for safety without providing evidence.