The measles outbreak that began in West Texas earlier this year has now grown to 327 cases, the public health department announced Tuesday morning. The state’s case count rose from 309 confirmed cases at the end of last week.

As measles cases in West Texas are still on the rise two months after the outbreak began, local public health officials say they expect the virus to keep spreading for at least several more months and that the official case number is likely an undercount.

The US has more measles cases this year than in all of 2024, the CDC said last week. Here’s what else you need to know about the outbreaks.