According to new data released Tuesday, the measles epidemic in western Texas is still growing, with 561 cases confirmed.

There have been 20 new cases in the last 5 days.

According to the Texas Department of State Health Services, the vast majority of cases occur in people who are unvaccinated or whose vaccination status remains unknown.

Four cases were among residents who had received one dose of MMR vaccine. Seven cases occurred among those who received two doses of the MMR vaccine.

So far, 58 patients have been hospitalized with measles.

The majority of the cases involve children and adolescents between the ages of 5 and 17, followed by those aged 4 and younger.

DSHS data indicates that Gaines County in New Mexico borders the epicenter of this outbreak. 364 cases have been confirmed.

Two deaths have been confirmed in connection with the outbreak. Both occurred among school-aged unvaccinated children.

Additional cases of the disease are likely to occur within the outbreak area as well as in surrounding communities. The health department stated that DSHS was working with local departments of health to investigate the outbreak.

The Centers for Disease Control and Prevention confirmed 712 cases of measles this year as of Friday in at least 24 States: Alaska, Arkansas, California, Colorado Florida, Georgia, Hawaii Indiana, Kansas, Kentucky, Maryland, Michigan, Minnesota, New Jersey, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, and Washington

There are at least five states reporting outbreaks, including Indiana, Kansas, New Mexico, Ohio, and Texas.

The CDC reports that 11% of the measles cases in the U.S. have been hospitalized this year, with the majority being under the age of 19.

Approximately 97% of the cases confirmed by the CDC are among people who have not been vaccinated or whose vaccination status has yet to be determined.

According to the CDC, 1% of these cases are among people who only received one dose of MMR vaccine, and 2% among those who received two doses.

CDC recommends two doses of vaccine, one at 12-15 months and another between 4 and 6. The CDC states that two doses of the measles vaccine are 97% effective. One dose is 93% efficient. Adults who have been vaccinated don’t usually need a booster.

According to the CDC, the Measles virus was declared eradicated in the United States by 2000 because of the highly effective vaccination program. CDC data indicates that vaccination rates have been down in recent years.