President Donald Trump says the United States is "rounding the corner" with the coronavirus – but health experts disagree.

Some experts say the country isn’t ready for some of the hazards ahead.

COVID-19 has infected more than 6.5 million people in the United States over the past six months, according to John Hopkins University.

Health experts say in addition to COVID-19, the U.S. is facing a triple challenge of the upcoming flu season, colder weather - which drives people indoors and increases risk of spread - and outbreaks as more students return to schools.

"We see around the globe countries successfully getting this under control and getting people back to work, and public health knows the path to get there, but we're not doing that," says Dr. Richard Besser, former CDC acting director.

As the U.S. is currently averaging about 35,000 new COVID-19 cases per day, drug maker Pfizer is working on phase three trials for a coronavirus vaccine and CEO Albert Bourla told CBS the drug-maker may know by the end of next month if it works. "Now having a vaccine is good, but we're rounding the turn regardless, we're rounding the turn and it's happening, it's happening, you'll see,” says President Donald Trump.

In the meantime, people are still advised to wear masks, and to maintain social distancing. "As we're waiting for a vaccine, we know what we can do. Other countries have done it. We should too," says Dr. Jodie Dionne-Odom, of the University of Alabama at Birmingham.

As of last night, more than 194,000 people in the U.S. have died of a COVID-19-related death, according to Johns Hopkins University.