In The Politics of Autism, I analyze the myth that vaccines cause autism. This bogus idea can hurt people by allowing diseases to spread. Examples include measles, COVID, flu, and polio. A top antivaxxer is HHS Secretary RFK Jr. He is part of the "Disinformation Dozen." He helped cause a deadly 2019 measles outbreak in Samoa.
Some social media commenters blame the increased invidence of meassles in the United States on undocumented immigrants. There are a couple of problems with this notion. First, ever since President Biden finally clamped down in early 2024, border crossings have declined greatly. Second, most "imported" cases come from US residents returning from trips abroad.
Mathis AD, Raines K, Filardo TD, et al. Measles Update — United States, January 1–April 17, 2025. MMWR Morb Mortal Wkly Rep 2025;74:232–238. DOI: http://dx.doi.org/10.15585/mmwr.mm7414a1.A multistate measles outbreak, predominantly affecting members of close-knit communities with low measles vaccination coverage in New Mexico, Oklahoma, and Texas began in January 2025. As of April 17, a total of 800 cases have been reported in the United States in 2025; 654 (82%) cases in New Mexico, Oklahoma, and Texas have been associated with the ongoing outbreak. These cases represent an approximately 180% increase over the 285 measles cases reported in the United States during all of 2024, and the second highest annual case count in the United States in 25 years. Overall, 771 (96%) patients have been unvaccinated or had unknown vaccination status (77% were unvaccinated, and 14% had unknown vaccination status when excluding 590 cases reported by Texas, which requires explicit consent by law [i.e., opt-in] to enroll in the Texas Immunization Registry), 85 (11%) patients have been hospitalized, and three patients have died. Among 48 (6%) internationally imported cases, 44 (92%) occurred among U.S. residents.
Background
Although measles was declared eliminated from the United States in 2000, measles cases and outbreaks continue to occur, resulting from importations of the disease from countries where it remains endemic.
Methods
We describe the epidemiology of international importations of measles virus into the United States during the post-elimination era.
Results
From 2001 to 2016, 553 imported measles cases were reported to the Centers for Disease Control and Prevention. A median of 28 importations occurred each year (range: 18–80). The median age of imported case-patients was 18 years (range: three months–75 years); 87% were unvaccinated or had an unknown vaccination status. U.S. residents (as opposed to foreign visitors) accounted for 62% of imported measles cases. Overall, 62% of all imported case-patients reported travel to countries in the Western Pacific and European Regions of the World Health Organization during their exposure periods. The number of measles importations from specific countries was related to the incidence of measles in and the volume of travel to and from the source country.
Conclusions
Our findings emphasize the importance of measles vaccination of U.S. residents aged ≥6 months before international travel according to Advisory Committee on Immunization Practices recommendations and supporting global measles elimination efforts
