More than 1.8 million cases of COVID-19 have been confirmed in the U.S., according to Johns Hopkins University. While some progress is being made on a vaccine, there are concerns about the virus spreading.

The large George Floyd protests may result in more coronavirus outbreaks.

Some people are wearing masks, but social distancing is at a minimum.

"There is no question that this could intensify the spread of coronavirus," says Mayor Bill de Blasio.

U.S. Surgeon General Dr. Jerome Adams says he expects more coronavirus cases nationally due to the gatherings.

On a more optimistic note, the National Institute of Allergy and Infectious Diseases says a phase three trial for one potential vaccine is scheduled to start next month.

"We're going to start manufacturing doses of the vaccine way before we even know that the vaccine works," says Dr. Anthony Fauci."By the beginning of 2021, we hope to have a couple of hundred million doses."

As for the next few months, the National Institute of Health says the summer heat probably won't stop the virus.

Meantime, the president tweeted Tuesday that the RNC will be looking for another host for its convention in late August.

North Carolina Gov. Roy Cooper isn't planning to ease social distancing guidelines for the convention.

Three Republican officials say President Trump will therefore not accept the nomination in Charlotte.

Contracts require some events to take place in Charlotte, but RNC officials are now looking for another location for the bulk of August's convention.

Among the spots reportedly under consideration are Jacksonville, Las Vegas, Nashville and Orlando.