Michigan has reported 2 more cases from 2 different counties, part of a small but steady rise in US cases.
Also, Florida and Ohio have reported more cases.
So far, 15 US jurisdictions have reported 35 cases this year, including 15 in just the last week.
In other US measles developments, Arizona's Maricopa County reported two more cases.
The infections are occurring amid a global rise in cases and gaps in MMR vaccination.
Several states have now reported cases amid a global spike in measles activity.
Increased activity continues into the new year, with gaps in vaccine coverage and the season's peak still ahead.
The vaccine campaign targets 610,000 people in South Sudan's Western Equatoria state.
The new cases come after the CDC urged health providers to watch for fever and rash in people who had traveled overseas.
The new center in Tokyo will support collaboration to better prevent, detect, and respond to public health threats in the region.
