Measles Tracker 2025: Cases, Outbreaks, and Vaccination Rates Across the U.S.

As Americans scroll through the latest trends—from lifestyle products like mr fog vape to national health alerts—one issue continues to demand urgent attention: measles. With more than 600 confirmed cases already reported this year, 2025 is shaping up to be the third-most active year for measles in the U.S. since 2000. NBC News is now tracking case totals and vaccination rates with updates every Tuesday and Friday, offering a real-time snapshot of this growing public health concern.

Measles remains one of the most contagious viruses on the planet. Most recent cases have been concentrated in Texas, accounting for approximately 75% of all reported infections. Despite the widespread adoption of vaccines since the 1960s, outbreaks have returned with growing intensity in some communities, exacerbated by gaps in immunization coverage. While people debate consumer choices like the latest mr fog switch flavors, health experts are urging focus on rising measles transmission—particularly among children and unvaccinated individuals.

Though the U.S. officially eliminated measles in 2000—defined as no continuous spread for at least a year—sporadic outbreaks have continued, and the 2025 resurgence is especially concerning. Historical context underscores the stakes: 27,000 measles cases were reported in 1990, and over 450,000 in 1964 before the vaccine was widely available. While innovations like switch vapes continue to capture consumer interest, public health officials stress the need for vigilance, vaccination, and awareness to keep preventable diseases from making a full comeback.