CDC Has Not Linked Measles Outbreaks in Multiple States, Official Says

‘We do not have epidemiological evidence linking the two chains of measles transmission,’ Jim O'Neill said.

A person walks past a sign at a health center where the measles, mumps, rubella (MMR) vaccine is administered in Lubbock, Texas, on Feb. 27, 2025. Ronald Schemidt/AFP via Getty Images

The Centers for Disease Control and Prevention has not linked outbreaks of measles across different states, despite a new report this week asserting otherwise, acting CDC Director Jim O'Neill said on Nov. 18.

“We do not have epidemiological evidence linking the two chains of measles transmission,” O'Neill wrote on X. “On the contrary, preliminary genomic analysis suggests the Utah and Arizona cases are not directly linked to Texas.”