The United States’ months-long effort to stop the deadly Ebola outbreak is reaching a “pivot point,” but Americans should expect more domestic cases, White House Ebola czar Ron Klain said Sunday.

“We will see (cases) from time to time,” Klain told CBS’ “Face the Nation.” “There’s still work to be done in Sierra Leone and Guinea. But we’re nearing a pivot point.”

Klain was appointed to the post in October by President Obama to lead the U.S. response to Ebola, days after the first death on U.S. soil as a result of the disease.