The director of the Centers for Disease Control and Prevention (CDC) said Thursday, Feb. 14, that the coronavirus outbreak is not under control in China and it will likely stay in the United States through this year and beyond. 

“Right now we’re in an aggressive containment mode,” CDC Director Dr. Robert Redfield told CNN. “This virus is probably with us beyond this season, beyond this year, and I think eventually the virus will find a foothold and we will get community-based transmission.”

Redfield, on Wednesday, warned that more human-to-human transmission in the United States is likely and underlined that “we don’t know a lot about this virus” as the Chinese regime has yet to allow the CDC to conduct on-the-ground work. 

He went on to say that there’s “no evidence” that China has the situation under control.

“There’s a lot of information we don’t know—that’s why I offered to provide assistance, direct assistance, and send our CDC folks over there back on January 6 to really help them gather that information and also to help us see the information first hand that we need to help make the right public health recommendations for our nation,” Redfield said. “That letter has not been responded to yet by the official Chinese government.”

The first 195 American evacuees from the epicenter of the coronavirus outbreak in Wuhan were released from a 14-day federal quarantine at a Southern California air base on Tuesday. However, new research released by China’s National Health Commission this week suggested that the incubation period for the virus could be as long as 24 days, Business Insider reported. 

Additionally of the asymptomatic transmission of the virus, the new revelations raise questions and concerns about the necessary length of quarantine periods to contain the spread of the virus. If the research, which has yet to be peer-reviewed, was correct, the standard 14-day quarantine period was ineffective. 

As of Thursday, there are 15 confirmed cases of the novel coronavirus in seven states: eight in California; two in Illinois; and one in each of Arizona, Washington, Massachusetts, Wisconsin and Texas.

The coronavirus, formally known as COVID-19, has killed almost 1,500 people mostly in China and infected more than 65,000 people worldwide.