United States measles cases surge with rising outbreaks

measles outbreak vaccination rates public health crisis MMR vaccine infant mortality

The United States is experiencing a significant surge in measles cases, with the CDC reporting 2,903 confirmed infections since the start of 2026. Approximately 94% of these cases are linked to active outbreaks, and 94% of those affected are unvaccinated or have unknown vaccination status.

In Pennsylvania, the Department of Health has confirmed 624 cases across 37 counties, resulting in 109 hospitalizations and two deaths. Lancaster County Coroner Dr. Stephen Diamantoni confirmed that one of the deceased infants, 6-week-old Mary Stoltzfus, died from a measles infection exacerbated by a genetic condition. A second infant, Ivan Miller, died from a ruptured spleen while infected with measles, though the coroner noted the virus was a significant contributing factor rather than the direct cause.

In the Midwest, Missouri is reporting cases and noting that its school-age vaccination rate of 89.5% falls below the 95% threshold required to prevent community outbreaks. Public health officials are emphasizing the importance of the MMR vaccine to combat the spread of the highly contagious virus.

Entities

Centers for Disease Control and Prevention · Dr. Stephen Diamantoni · Erica Schwartz · Missouri Department of Health & Senior Services · Paul Offit · Pennsylvania Department of Health · Robert F. Kennedy Jr. · United States

Claims

What the coverage asserts, and how many sources carry each claim.

[● 3 SOURCES] Pennsylvania has recorded 109 hospitalizations due to measles this year. www.gpkmedia.com · www.keysnews.com · www.postguam.com
[○ 1 SOURCE] The CDC reported 2,903 confirmed measles cases in the United States since the start of 2026. suntimesnews.com
[● 3 SOURCES] Lancaster County Coroner Dr. Stephen Diamantoni stated a measles infection caused the death of 6-week-old Mary Stoltzfus. www.statnews.com · triblive.com · wtop.com
[○ 1 SOURCE] 94% of confirmed measles cases in the U.S. are currently associated with outbreaks. suntimesnews.com
[● 3 SOURCES] Infant Ivan Miller was infected with measles, though the coroner noted it was a contributing factor rather than the direct cause of his death from a ruptured spleen. www.statnews.com · triblive.com · wtop.com
[○ 1 SOURCE] Missouri's vaccination rate for school-age children is 89.5%, below the 95% threshold required for community protection. suntimesnews.com
[● 3 SOURCES] Pennsylvania has confirmed 624 measles cases across 37 counties this year. www.gpkmedia.com · www.keysnews.com · www.postguam.com
[● 3 SOURCES] There have been two cumulative measles-associated deaths in Pennsylvania. www.gpkmedia.com · www.keysnews.com · www.postguam.com