The outbreak of measles in a small West Texas community may be worse than officials originally thought. They are scrambling to promote vaccinations.

Additional measles cases "are likely to occur" as an outbreak of the virus grows, the Texas Department of State Health Services said in its latest update.

An outbreak of measles in the South Plains of Texas is continuing to grow, with the number of cases doubling in less than a week. At least 48 cases were identified with symptom onset within the last three weeks,