Centers for Disease Control and Prevention reported 4,588 cases across the country, more than double the tally in 2025

Federal health authorities reported an additional 178 cases of measles in the US this week, as the vaccine-preventable illness continues to sicken people across at least 43 outbreaks.

The new data reported by the Centers for Disease Control and Prevention (CDC) comes as experts criticize the agency for lack of transparency, and as health secretary Robert F Kennedy Jr takes steps to further upend US vaccine infrastructure.

California, Oregon, Washington and Hawaii health officials ask CDC ‘prioritizing emerging technologies’ to reconsider

California and Washington asked the US Centers for Disease Control and Prevention (CDC) in May to validate a new way to test for measles – but after waiting two months, the CDC denied the request, citing “other competing priorities”, according to a letter from the West Coast Health Alliance to the CDC director, Erica Schwartz.

The letter, signed by health officials in California, Hawaii, Oregon and Washington, asks Schwartz to reconsider and validate a rapid, high-volume measles test in preparation for major outbreaks. The alliance also asked the CDC to create protocols to test for other high-priority pathogens to prepare for future outbreaks.

State has confirmed six measles-related deaths and county at center of outbreak lacks its own health department

The county at the center of Pennsylvania’s measles outbreak is at a clear disadvantage because, local officials say, it lacks its own health department and it will now get special assistance from the Centers for Disease Control and Prevention (CDC).

As of Wednesday, Pennsylvania had confirmed 1,222 measles cases, up from 86 the week before. Six measles-associated deaths have also been confirmed by the state.