An immunologist has raised concerns about living in a “post-herd-immunity world,” as outbreaks of measles surge in areas with low vaccination rates across the American southwest, Mexico, and Canada.
The US is currently experiencing its largest measles outbreak in 25 years, with the epicenter in west Texas. This outbreak has tragically resulted in the deaths of two unvaccinated children and one adult, and it has expanded into nearby states like New Mexico and Oklahoma.
“We’re clearly in a post-herd-immunity world. This outbreak of measles is evidence of that,” stated Dr. Paul Offit, a well-known expert in infectious diseases and director of the Vaccine Education Center at Children’s Hospital of Philadelphia.
Measles, which is known to be one of the most contagious diseases preventable by vaccines, is likely the first to re-emerge during these low vaccination times.
Measles was effectively eliminated in the US in 2000, but the elimination status could vanish if there’s a sustained transmission of the virus for 12 months. As of May 1, the CDC reported a shocking 935 confirmed cases of measles across 30 jurisdictions, with almost one-third of those cases involving children under five, resulting in 285 hospitalizations.
Three major outbreaks in Canada, Mexico, and the US now represent a significant portion of the approximately 2,300 measles cases in the Americas, indicating a high risk level that has increased elevenfold compared to 2024.
Meanwhile, new data from the European Centre for Disease Prevention and Control and WHO noted a tenfold rise in measles cases across Europe in 2024 compared to the previous year. In Europe alone, cases reportedly reached 35,212, with 87% occurring in Romania. The drop in vaccination rates appears to be a factor in this surge, with only three countries, Hungary, Malta, and Portugal, achieving over 95% coverage for both doses of the measles vaccine.
“This virus has been crossing borders,” remarked Leticia Ruíz, the director of prevention and disease control in Chihuahua, Mexico.
Notably, many cases have been traced to areas with large, tightly-knit Mennonite communities. This group, while not explicitly against vaccinations, may have lower vaccination rates partly due to limited interactions with public health services, as some members resist assimilation and communicate in Low German.
There are growing fears among immunologists that the rates of such infections—and the unnecessary suffering they cause—will continue to rise, especially with figures like US health secretary Robert F Kennedy Jr. spreading misinformation about vaccines. His actions seem to undermine public trust and hinder vaccine accessibility, leading to a weakened public health infrastructure.
The National Institutes of Health has announced plans to initiate a $500 million “universal” influenza vaccine trial, but this comes amid a climate of hostility toward COVID-19 vaccines within the administration.
“Honestly, Robert F Kennedy Jr has remained consistent in his anti-vaccine activism and denial of science,” Dr. Offit remarked.
While Kennedy has somewhat endorsed the measles, mumps, and rubella (MMR) vaccine, he has also made false statements suggesting that it contains “aborted fetus debris.” The rubella vaccine is produced using cell lines derived from elective terminations from the 1960s.
Recently, Kennedy visited the worst-affected community in Texas for his role as health secretary and made misleading statements about treatments for measles, suggesting that certain antibiotics had led to “miraculous recoveries.”
However, the scientific consensus remains that the MMR vaccine is the most effective way to prevent measles, boasting a 97% efficacy rate. Still, Kennedy has suggested he will ask the CDC to explore vitamins and other drugs for treating the disease.
It’s important to note that measles is a viral condition with no cure, and prominent health organizations like the American Academy of Pediatrics (AAP) do not consider it treatable.
“Promoting the idea that measles can be easily treated with unproven methods is both misleading and dangerous,” the AAP has warned regarding Kennedy’s claims.
Measles can prove fatal for approximately one in a thousand infected children and can lead to other complications, including encephalitis, which can result in lasting disabilities. The virus also weakens the immune system, increasing susceptibility to additional infections.
Vaccination against measles has reportedly saved over 93 million lives worldwide between 1974 and 2024 and has significantly lowered overall childhood mortality rates.
