What’s happening with measles in Pennsylvania? There is currently a disagreement between local health officials and the feds over whether there are one, two, or no measles deaths in the ongoing outbreak there.

Measles cases in the U.S. have topped 2,700 in 2026. Here's what to know about immunity, exposure windows, and where to get care safely.

Two more children have tested positive for measles in Collier County as health officials monitor the outbreak.

A new CDC map reveals how widely measles has spread—and why the timing matters now.

The CDC is refusing to count the deaths of two children in Pennsylvania from measles, directly contradicting the state's health officials.

The agency’s weekly update escalates a political fight after Pennsylvania said two deaths had been caused by the virus.

With the risk of infection rising, parents and young adults are facing agonizing choices about being out in public as school starts back up.

Pennsylvania is one of three states, alongside South Carolina and Utah, that have been hit the hardest by measles this year

After Pennsylvania reported two measles deaths, the C.D.C. took the highly unusual step of challenging the state. Our reporter Apoorva Mandavilli explains how this tension between the Trump administration and states over health issues is creating confusion for Americans.