Centers for Disease and Control Prevention (CDC) Director Rochelle Walensky spoke out on Monday to say that Michigan should “close things down” after a surge of COVID-19 in the state.

“When you have an acute situation, an extraordinary number of cases like we have in Michigan, the answer is not necessarily to give vaccines — in fact, we know the vaccine will have a delayed response,” Walensky old reporters, according to Axios. “The answer to that is to really close things down, to go back to our basics, to go back to where we were last spring, last summer… to flatten the curve, decrease contact with one another, to test to the extent we have available, to contact trace.”

“If we tried to vaccinate our way out of what is happening in Michigan, we’d be disappointed that it took so long for the vaccine to work, to actually have the impact,” she added.

This comes after Michigan’s Democratic Governor Gretchen Whitmer (D) admitted on Sunday that she is “seeing a surge “of coronavirus cases despite implementing some of the strictest coronavirus regulations in the country on her state.

“We are seeing a surge in Michigan despite the fact that we have some of the strongest policies in place, mask mandates, capacity limits, working from home,” Whitmer told CBS’s “Face the Nation.” “We’ve asked our state for a two-week pause. So despite all of that, we are seeing a surge because of these variants. And that’s precisely why we’re really encouraging them to think about surging vaccines into the state of Michigan. And I’m going to continue to fight for the people of Michigan.”

She went on to say that while she understands that the Joe Biden administration has a national distribution plan for vaccines in place, officials should consider making changes to accommodate Michigan’s growing case numbers. White House Covid coordinator Jeff Zients stated on Friday that shipping additional doses to Michigan was not under consideration, however.

“There are tens of millions of people across the country, in each and every state and county, who have not yet been vaccinated, and the fair and equitable way to distribute the vaccine is based on the adult population by state, tribe, and territory,” Zients said.