The United States has officially lost its measles elimination status, according to global health authorities, marking a major setback in the country’s public health achievements. The Pan American Health Organization (PAHO), a regional office of the World Health Organization, revoked the status following a sustained surge in measles cases and declining vaccination rates across the country.
The decision comes as the US faces its largest measles outbreak in more than thirty years, with over 8,000 people reported sickened and more than 830 hospitalized in the past two years, according to officials cited by multiple news outlets. At least 13 measles-related deaths have been reported, including infants in New York, Pennsylvania, and Wisconsin, health authorities said.
PAHO experts concluded this week that measles has reestablished regular transmission in the United States, ending a 26-year period in which the country was considered measles-free. The organization is expected to make a public announcement on November 17, according to KFF Health News and other sources familiar with the decision.
The US first achieved measles elimination status in 2000 after extensive immunization campaigns dramatically reduced the spread of the virus. Elimination status, as defined by PAHO, requires that no continuous transmission of measles occurs for at least 12 months. The current situation, with ongoing outbreaks and persistent transmission, no longer meets this standard.
Public health experts attribute the resurgence of measles to falling vaccination rates, which have dropped in several states over recent years. According to Johns Hopkins University researchers, the outbreaks have resulted in an estimated $125 million in medical care, public health response, and productivity losses.
Officials said that the Centers for Disease Control and Prevention (CDC) will not change its measles response following the loss of elimination status. “We’re going to be doing the same exact thing that we’ve been doing today, which is working with the states,” said a CDC spokesperson, as reported by CNN.
The recent outbreaks have been especially severe in states such as Pennsylvania and Wisconsin, with infants and young children, who are often too young to be vaccinated, among the most vulnerable. Medical experts have warned that declining confidence in vaccines and misinformation have contributed to lower immunization coverage.
Some observers have raised concerns that the timing of PAHO’s review may have been influenced by political considerations, as the expert session was postponed until after the US midterm elections. However, PAHO officials have denied any political pressure, emphasizing that the review process applies to all countries in the Americas.
The United States is not alone in facing a resurgence of measles. Other countries in the region, including Mexico, have also experienced severe outbreaks this year and may face similar reviews of their elimination status, according to Health Policy Watch.
Why it matters
The loss of measles elimination status signals a significant reversal for US public health, which had previously been seen as a global leader in disease control. According to Johns Hopkins University researchers, the financial and human costs of recent outbreaks have been substantial, with over $125 million in losses and at least 13 deaths reported.
This development highlights the critical importance of maintaining high vaccination rates to prevent the resurgence of vaccine-preventable diseases. Experts cited by KFF Health News and Health Policy Watch stress that ample supplies of the measles vaccine remain available and that two doses are 97% effective at preventing infection. However, falling immunization rates have undermined decades of progress.
Looking ahead, public health officials and medical experts say that regaining measles elimination status will require renewed efforts to boost vaccination coverage and restore public trust in immunization programs. The experience of Brazil, which regained its elimination status after losing it in 2019, suggests that recovery is possible if vaccination rates improve. For now, the US faces the ongoing challenge of containing outbreaks and protecting vulnerable populations.
The image accompanying this article is an AI-generated illustrative depiction inspired by the actual scene of the event.
