Walgreens said on Wednesday that it has seen an uptick in COVID-19 vaccinations among states that have been lagging behind in the vaccine rollout as cases surge due to the delta variant.

Walgreens announced in a press release that it has administered more than 29 million COVID-19 vaccine doses. According to the pharmacy chain, it has observed a 30 percent increase in vaccinations in parts of the country that have been slower to get immunized.

These areas include states found mostly in the South, such as Alabama, Florida, Georgia, Kentucky, Louisiana, Mississippi, Tennessee and Texas.

Along with vaccinations, Walgreens noted that demand for COVID-19 testing has also recently risen, with states like Florida and Missouri seeing the largest increases in demand.

“As always, our top priority is ensuring the health and safety of our team members, customers and patients, and as a company deeply committed to health and wellness, our mission has never been more critical,” Roz Brewer, CEO of the Walgreens Boots Alliance, said. “COVID-19 vaccines have been proven to be safe and effective, and are critical to stopping the spread of this terrible virus and ensuring all our communities are protected.”

Like many companies in the U.S., Walgreens has instituted a vaccine mandate for its employees, though the mandate only requires U.S. support staff members to be fully immunized by Sept. 30.