Thanks to widespread vaccination, measles had been considered “eliminated” as a continually transmitting illness in the United States since 2000 – but not anymore.

An independent commission of experts that reports to the director of the Pan American Health Organization determined that the US no longer qualified as having eliminated measles, a source close to the process told CNN on Friday. The news was first reported by The Wall Street Journal.

The decision was widely expected after years of falling vaccination levels and surging case counts, but it’s still a black mark on the nation’s public health policy.