The uninsured rate among Latinos was reduced by nearly half following the Affordable Care Act’s first open enrollment period, according to a new Commonwealth Fund brief.

Among young Latinos, those 19 to 34, the uninsured rate dropped from 43 percent from July to September 2013 to 23 percent in April-June 2014, the report says. Among nonelderly Latinos who predominantly speak Spanish, the uninsured percentage dropped from 49 percent to 30 percent.

Roughly 68 percent of Latinos who got coverage through the Affordable Care Act didn’t have health insurance.

“The Affordable Care Act appears to be working for millions of Latinos who, as a group, have long faced the nation’s highest uninsured rates,” said Michelle Doty, the report’s lead author and the Commonwealth Fund’s vice president for Survey Research and Evaluation. “These substantial improvements will mean better health and health care for millions of people.”

The report also found stark differences in the uninsured rates for Latinos in states that have expanded Medicaid and those that did not. In the 25 states and District of Columbia that expanded Medicaid by the time of the survey, the uninsured rate for Latinos fell from 35 percent to 17 percent. In states that did not expand Medicaid, like Louisiana, Latinos’ uninsured rate remained largely unchanged at 33 percent.