Dr. Scott Gottlieb warned, Tuesday, that the United States may enter the “most dangerous season” for coronavirus infection, as the cold weather brings more people indoors.

“As we approach the fall and winter seasons, conditions are ripe to see a continuous and more aggressive spread of this virus,” Gottlieb said on CNBC. Squawk Box. He urged Americans to adhere to public health measures aimed at mitigating the spread of the disease, such as wearing masks and social distancing.

“The children are back in school, the children are back on college campuses. The work is trying to restart. People are getting more satisfied and tired of the restrictions, so all these conditions will start in the fall and winter, I think it will create a lot of risks.”

Gottlieb’s comments came a day after the global deaths from the Covid-19 virus Topped 1 million, And a week after the United States Exceeded 200,000 deaths.

Former Commissioner of the Food and Drug Administration under the President Donald Trump He added that he was concerned about the current number of new daily infections in the United States, echoing remarks made on Monday by the White House Coronavirus Adviser Dr. Anthony Fauci.

With an average of more than 40,000 new cases per day, Fauci said the United States is “Not in a good place” Because it enters the fall and winter seasons.

Gottlieb said Tuesday, “You are definitely seeing an increasing number of infections at the moment, so we are dealing with a great deal of infection in the most dangerous season for this virus.”

Disclosure: Scott Gottlieb is a CNBC shareholder and board member PfizerInitiate genetic testing Tempus Biotech Corporation Illumina. He is also the co-chair of Norwegian Cruise Line HoldingsAnd the Royal Caribbean“Health Sail Panel.”