Louisiana has not had any confirmed cases of the new coronavirus as of Monday morning, the state Department of Health said. But authorities in Louisiana are busy preparing for a possible outbreak of COVID-19.

Update: 1st case of 'presumptive' coronavirus confirmed in Louisiana

Several hospitals in New Orleans are ramping up their screening procedures, cruise ships sailing from New Orleans are checking passengers for coronavirus symptoms, and the Louis Armstrong New Orleans International Airport is stepping up cleaning efforts.

Plus, LSU has canceled its study abroad programs and is looking at possibly suspending face-to-face classes.

Here's what we know about coronavirus as of Monday morning.

How many people tested in Louisiana?

The health department said it has gotten results for 11 tests for COVID-19, the new coronavirus, as of 8:30 a.m. Monday. Officials did not say how many people have been tested.

Update: 1st case of 'presumptive' coronavirus confirmed in Louisiana

"There are no confirmed or presumptive positive cases in Louisiana," the state health department tweeted.

Where is the virus?

Infections were reported in more than half the world’s countries, according to The Associated Press. More than 110,000 people have tested positive for the disease and more than 3,800 people with the virus have died, most of them in China. Some 62,000 people have already recovered.

More than 500 cases have been confirmed in the United States. The death toll has reached at least 21.

There have been no confirmed cases in Louisiana.

Wall Street trading temporarily halted

Stocks plunged 7% on Wall Street Monday, triggering a trading halt for 15 minutes. The steep drop followed similar falls in Europe after a fight among major crude-producing countries jolted investors already on edge about the widening fallout from the outbreak of the new coronavirus.

The most violent drops came from the oil markets, where prices cratered more than 20%.

Several New Orleans hospitals ramp up coronavirus prep

Every person entering a Tulane Health System facility will be screened for coronavirus starting Monday, according to an email sent out to staff on Friday.

Tulane Medical Center, the Tulane Lakeside clinic and other offsite clinics will participate in the screening process.

LCMC Health, which runs University Medical Center, Children’s Hospital, the New Orleans East Hospital, West Jefferson Medical Center and Touro Infirmary, is posting signs asking visitors to practice good hand and cough hygiene and to stay away if they are sick.

Ochsner Health System, which has 40 hospitals across the state and over 100 clinics and urgent care centers, has altered its check-in system to screen patients.

These New Orleans hospitals are ramping up screening for coronavirus at their doors As coronavirus cases spike across the U.S., New Orleans area hospitals are preparing for the increasing likelihood that patients and visitors …

New Orleans cruise ships to check passenger temperatures

Cruise ships that stop in New Orleans are checking all passengers' temperatures and looking for signs of the fever that the virus can cause, New Orleans officials said Friday.

And the Louis Armstrong New Orleans International Airport is increasing its cleaning of frequently touched surfaces, such as doorknobs and handrails.

Because the airport does not have direct service from any of the countries most impacted by the virus, it is not screening flyers for symptoms, spokeswoman Erin Burns said.

Meanwhile, first responders and other public employees are practicing "social distancing" to try to limit the ability of the virus to jump from person to person, officials said.

The city has also provided hand sanitizing stations in its public buildings, and has replaced many of the trash cans on its streets that have handles that must be pulled by hand.

The news came after a closed-door meeting Friday in New Orleans with about 90 agencies. The goal was to review the potential impact of an outbreak in the city and various ways to limit the disease's spread.

+2 New Orleans officials work through 'various scenarios' for coronavirus response New Orleans officials on Friday reviewed the potential impact that an outbreak of the new coronavirus could have on the city and various ways …

U.S. citizens shouldn't take cruises, State Dept. says

The U.S. State Department is warning American travelers to avoid cruise ships due to the increased risk of infection from the COVID-19 virus in that environment, according to a Sunday memo.

The department said older travelers and those with medical issues should "avoid situations that put them at increased risk for more severe disease," including cruise ships.

The Grand Princess cruise ship, which has at least 21 confirmed virus cases, was expected to dock in Oakland, California, amid elaborate protective procedures.

In Florida, passengers disembarked from the Regal Princess after it received clearance to dock. Two crew members eyed as possible carriers had negative tests for the virus.

The Caribbean Princess cruise ship, meanwhile, cut short a Fort Lauderdale-Mexico cruise because crew members had been on another ship where people were infected.

+3 U.S. citizens shouldn't travel by cruise ship due to coronavirus risk, State Department warns The U.S. State Department is warning American travelers to avoid cruise ships due to the increased risk of infection from the COVID-19 virus i…

2 members of Congress in self-isolation

In Washington, the Capitol's attending physician's office said “several” members of Congress had contact with a person who attended a recent political conference and subsequently developed COVID-19. They “remain in good health,” the office said.

Two members of Congress, Sen. Ted Cruz and Rep. Paul Gosar, said they are isolating themselves after determining they had contact with the person.

Cruz, R-Texas, said Sunday he had brief contact with the man at the Conservative Political Action Conference nearly two weeks ago and would spend the next few days at his home in Texas until a full 14 days had passed since their interaction.

President Donald Trump also attended the CPAC meeting.

The CPAC schedule listed No. 2 House GOP leader Steve Scalise of Louisiana as one of the speakers.

LSU cancels study abroad, might suspend face-to-face classes

LSU has canceled all international study abroad programs through Aug. 17 because of worries about the novel coronavirus.

And, LSU is considering temporarily suspending face-to-face instruction, officials said Saturday.

"To be clear, at the time of this writing all instructional activities should proceed as planned," Matt Lee, vice provost for academic programs and support services, wrote to staff members Saturday.

"However, the situation is extremely fluid and in the interest of protecting the health and wellness of the campus community it may be necessary to temporarily suspend some campus activities, including instruction."

LSU might suspend face-to-face classes if coronavirus concerns escalate LSU is considering temporarily suspending face-to-face instruction because of the novel coronavirus, officials said Saturday.

LSU cancels all planned study abroad programs amid coronavirus scare LSU leaders said Friday all planned international study abroad programs will be canceled through Aug. 17 because of worries about the novel co…

Disney World taking precautions

Disney officials said in a statement that extra hand sanitizers were being placed throughout its four Florida parks and more than two dozen hotels.

If a Disney visitor shows coronavirus symptoms or first responders think they have the flu, both patient and paramedic will get a face mask, said Tim Stromsnes, president of the union local for firefighters at Disney World.

Tom Schroder, a spokesman for Universal Orlando, said it is reinforcing "best-practice health and hygiene procedures” in response to the coronavirus outbreak and adding more hand sanitizer units to its parks.

“We will continue to closely monitor the situation and be ready to act as needed,” he said.

Have questions?

The state's coronavirus general info number is 1-855-523-2652. It's open 8 a.m. to 4:30 p.m. Monday through Friday.

Here's the state's website for the coronavirus.

Staffers Emily Woodruff, Jessica Williams and Will Sentell contributed to this article, along with The Associated Press.