Nearly 100 cases of measles have been reported across Texas and New Mexico. Measles was declared eliminated from the United States in 2000, making this outbreak a cause for concern. Health officials attribute the rise in cases to plummeting immunisation rates,

Texas reported 90 cases this week, while New Mexico reported nine. A majority of the cases have been in a Texas county where vaccination rates have lagged behind the rest of the state.

Health authorities warned of further spread. Most U.S. measles cases this year involved people 19 and under and those without a confirmed vaccination.