At least six police officers were injured in a shooting Wednesday afternoon in Philadelphia's Nicetown-Tioga neighborhood.

The unidentified suspect is now holed up in a building, surrounded by law enforcement officials. The officers were rushed to a local hospital, and are all expected to survive. An additional officer was injured in a car accident during the incident, and is receiving treatment.

Philadelphia Police Capt. Sekou Kinebrew said officers were called to the scene for narcotics activity, and gunfire erupted as a warrant was being served. There are now agents from the Bureau of Alcohol, Tobacco, Firearms, and Explosives outside the building, as well as armored vehicles.

This is a developing news story. Catherine Garcia

Centers for Disease Control and Prevention Director Robert Redfield on Tuesday said if everyone in the United States wore face masks, the coronavirus could be "under control" within one to two months.

During a webinar with the Journal of the American Medical Association's Howard Bauchner, Redfield said he was "glad" President Trump wore a mask in public for the first time over the weekend, as this "set the example" for others. "The time is now" to wear face coverings, and he believes "if we could get everybody to wear a mask right now, I think in four, six, eight weeks we could bring this epidemic under control."

Redfield is concerned about this year's flu season coinciding with the coronavirus pandemic, and urged people to get their flu shots. "I do think the fall and the winter of 2020 and 2021 are going to be probably one of the most difficult times that we experienced in American public health," he said. "Keeping the health care system from being overstretched I think is really important, and the degree we are able to do that will define how well we get through the fall and winter." Catherine Garcia

Justice Ruth Bader Ginsburg was hospitalized early Tuesday, after experiencing fever and chills, a Supreme Court spokeswoman said.

Ginsburg, 87, was evaluated at a hospital in Washington, D.C., on Monday night, before being admitted to Johns Hopkins Hospital in Baltimore. Spokeswoman Kathleen Arberg said Ginsburg "underwent an endoscopic procedure at Johns Hopkins this afternoon to clean out a bile duct stent that was placed last August. The justice is resting comfortably and will stay in the hospital for a few days to receive intravenous antibiotic treatment."

In May, Ginsburg received treatment at Johns Hopkins for a gallbladder condition. She has battled cancer four times, and last August, underwent radiation for a tumor on her pancreas. Catherine Garcia

The results from the first phase of Moderna's coronavirus vaccine trial are out, and the promising findings are in line with some early data from the study released in May.

The study, published Tuesday in The New England Journal of Medicine, found the experimental mRNA vaccine — which requires two doses a month apart — induced coronavirus immune responses in all 45 participants, just as scientists had hoped. There were some mild side effects, including fatigue, chills, and fevers, but The Associated Press notes those aren't uncommon with other vaccines, and there have been no major safety concerns.

Moderna will begin its final step at the end of July, a 30,000-person study to prove if the shots are strong enough to protect people from the virus. While the first phase does indicate the vaccine produces antibodies geared toward fighting off the virus, it's less clear if the levels of antibodies are enough to actually fend off infection. Read the full results of the study at The New England Journal of Medicine, as well as more context at The Associated Press. Tim O'Donnell

The creators of Glee are remembering Naya Rivera as a "joy to be around," and setting up a college fund for her young son, after her tragic death.

Glee creators Ryan Murphy, Brad Falchuk, and Ian Brennan released a tribute to Rivera on Tuesday after officials said they recovered her body at Lake Piru in California, where she went missing days earlier. The actress, who played Santana Lopez on Glee, was feared dead after her 4-year-old son was found alone in a boat she had rented. Ventura County Sheriff Bill Ayub said this week Rivera "mustered enough energy to get her son back onto the boat, but not enough to save herself," and an autopsy has since confirmed her cause of death as accidental drowning. She was 33.

"We are heartbroken over the loss of our friend Naya Rivera," Murphy, Falchuk, and Brennan said, per Variety. They described her as "one of the most talented, special stars we would ever have the pleasure of working with," someone who was "a joy to write for, a joy to direct and a joy to be around."

"She was warm and caring and fiercely protective of the rest of the cast," they go on to say. "She was tough and demanding. She was fun. She was kind. She was generous. ... Naya was more than just an actor on our show — she was our friend."

The statement ends with Murphy, Falchuk, and Brennan saying that their "hearts go out to her family" and that they are "in the process of creating a college fund for the beautiful son Naya loved most of all."

Among Rivera's former Glee colleagues who previously paid tribute this week were Jane Lynch, who remembered "what a force" she was, and Chris Colfer, who wrote, "Naya was truly one of a kind, and she always will be." Brendan Morrow

President Trump continued to stir controversy about the Confederate battle flag Tuesday during an interview with CBS News' Catherine Herridge.

Herridge asked Trump if he still believes, as he said in 2015, that the flag should be removed from public spaces and placed in museums. The president didn't explicitly answer the question, but he said the only thing he really cares about his "freedom of speech," implying that he thinks people should be allowed to leave it up.

When Herridge reminded him the flag is a "painful reminder" for many people because the Confederacy rebelled against the United States to preserve slavery, Trump said he knows people who "like the Confederate flag" but are not "thinking about slavery" before once again turning the conversation back to the First Amendment. Tim O'Donnell

Florida is now leading much of the world in new coronavirus cases, and it's showing no signs of slowing down.

Florida reported 9,194 new coronavirus cases in the past day on Tuesday afternoon, bring its total case count to 291,629. A total of 132 new deaths were reported, bringing that count to 4,409, per the Miami Herald.

Miami-Dade County led the new case count at 2,090, leading one infectious disease expert to deem Miami the new "epicenter of the pandemic," CNN reports. "What we were seeing in Wuhan six months ago, five months ago — now we are there," said Lilian Abbo, of the Jackson Health System, during a Monday news conference held by the Miami-Dade County mayor.

The county has seen coronavirus hospitalizations grow by 68 percent and the number of ICU beds used go up by 69 percent in the past two weeks. The number of ventilators in use has also more than doubled during that time. Kathryn Krawczyk