Joe Biden’s administration is widely expected to launch a new strategy to combat the deadly disease’s Delta variant on Sept. 7. It will urge more Americans to be immunized.

“On Thursday, the president will speak to the American people about his robust plan to stop the spread of the Delta variant and boost vaccinations,” White House Press Secretary Jen Psaki said in a statement. “He will lay out a six-pronged strategy.”

The president previously warned federal employees and contractors to take the jab or constantly be tested. The Delta variant caused a spike in COVID-19 cases across the nation.

His administration openly supported booster shots in August, with further vaccine doses expected to be made available to most Americans from Sept. 20.

Whether the new plan includes expanding vaccine mandates or mask requirements, or requiring booster shots, remains unclear.

Centers for Disease Control and Prevention (CDC) data shows the United States recorded a seven-day average of 137,270 new cases, and 20,800 deaths in the past 14 days.

Biden previously blamed disappointing August employment figures on the virus.

“There is no question the Delta variant is why today’s jobs report is not stronger,” he said in a statement. “I know people were looking, and I was hoping, for a higher number but next week, I will lay out the next steps that we are going to need to combat the Delta variant [and] to address some of those fears and concerns.”

In the United States 74.8% of adults have received at least one vaccine, with 64% having been fully vaccinated according to the CDC.

“[The president is ] working across the public and private sectors to help continue to get the pandemic under control,” Psaki said in a statement. “We need to continue to take more steps to make sure school districts are prepared and make sure communities across the country are prepared.”