Texas sets new single-day record for coronavirus deaths

A pandemic of the novel coronavirus has now killed more than 552,000 people worldwide.

Over 12.1 million people across the globe have been diagnosed with COVID-19, the disease caused by the new respiratory virus, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University. The actual numbers are believed to be much higher due to testing shortages, many unreported cases and suspicions that some governments are hiding the scope of their nations' outbreaks.

Since the first cases were detected in China in December, the United States has become the worst-affected country, with more than 3.1 million diagnosed cases and at least 133,106 deaths.

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Here is how the news is developing today. All times Eastern.

6:52 p.m.: Arizona launches 'Project Catapult' to increase testing

Gov. Doug Ducey announced at a Thursday press conference he is signing an executive order to reduce indoor dining in Arizona to less than 50% of a restaurant’s capacity.

In addition, he said the state will be launching "Project Catapult" to drastically increase testing. The goal is 35,000 tests per day by the end of July, and 60,000 tests by the end of August.

Ducey urged Arizonans to stay at home multiple times during the press conference as the state deals with a surge in cases.

"The virus is widespread and the more activity that is happening in our economy, the more the spread will continue," he said.

The governor pointed out that the RN, the disease's capacity to spread, had fallen from 1.18 to 1.10 in the 10 days since the mask mandate and other restrictions went into effect. The number measures the average amount of people one infected person will spread the disease to. Officials look for a number under 1 to say the disease is under control.

Ducey also said he spoke to Dr. Deborah Birx, response coordinator for the White House coronavirus task force, who told him that getting out of the "zone" that Arizona is in will be a two- to four-week event.

6:47 p.m.: Texas sets new single-day record for deaths

Texas, in the middle of a surge of coronavirus cases, set a new one-day record total with 105 deaths reported Thursday.

The state has confirmed 9,782 new cases since yesterday with a 15.03% positivity rate on tests.

The death toll rose to 2,918 with the 105 reported Thursday.

As has been the case in Florida, hospitals are now overcrowding across Texas. In especially hard-hit Houston, Texas Medical Center now says it is at 105% capacity.

Houston has added a third free testing site, as the two it had offered 650 tests a day and they ran out by noon.

6:14 p.m.: Kentucky mandates face coverings

Kentucky Gov. Matt Beshear is mandating masks or facial coverings for the entire state in places where people cannot socially distance.

The executive order will go into effect Friday at 5 p.m. and last for 30 days.

Beshear has struggled with other politicians in his state over issuing COVID restrictions. Just hours before making the mask announcement at a press conference, a circuit judge issued a temporary restraining order against new executive orders signed by the governor related to COVID-19. He promised to fight the ruling.

The governor announced there were 333 new cases of coronavirus in the last day and four deaths.

In May, Beshear recommended people wear masks in public, but said it was not a requirement.

4:50 p.m.: NYC cancels large-scale events through September

New York City has canceled large-scale events, including street fairs and events in parks, through Sept. 30, Mayor Bill de Blasio said Thursday.

"As New York has begun its reopening process, accessible open spaces are more important than ever," de Blasio said in a statement. "While it pains me to call off some of the city's beloved events, our focus now must be the prioritization of city space for public use and the continuation of social distancing."

Demonstrations and religious events are exempt.

4:27 p.m.: California reports highest daily death total

California reported 149 new deaths on Thursday -- the highest daily number of fatalities so far.

Gov. Gavin Newsom stressed that the number may be attributed to lags in reporting, pointing out that the day after the Fourth of July only six deaths were reported.

Hospitalizations have jumped 42% in the last two weeks and intensive care unit admissions increased 29%.

3:30 p.m.: 11,312 pregnant moms diagnosed with coronavirus, most of them Latina: CDC

The Centers for Disease Control and Prevention said it is aware of 11,312 pregnant women who have tested positive for COVID-19 in the U.S.

Of those, 3,252 women have been hospitalized and 31 have died, the CDC reported.

The disproportionate share of the pregnant women to test positive were Hispanic/Latina women.

The CDC recorded that 4,553 of the women were Hispanic/Latina and 2,140 were white.

2:50 p.m.: Over 1,000 TSA employees have tested positive for COVID-19

The Transportation Security Administration (TSA) says 1,018 of its employees have tested positive for COVID-19 since the beginning of the pandemic.

Of that number, 647 have recovered and six have died.

New York City's John F. Kennedy International Airport has had the highest number of positive cases with 116 TSA employees.

Second to JFK is New Jersey's Newark Liberty International Airport where 69 TSA workers have tested positive.

The TSA has taken steps to help protect workers like requiring employees to wear face coverings and installing plexiglass at screening locations.

There have also been calls from major U.S. airlines for the TSA to conduct temperature screenings on passengers.

2:20 p.m.: North Carolina reports highest day of hospitalizations

North Carolina reported its highest day of hospitalizations and second-highest day of cases on Thursday, Gov. Roy Cooper said.

At least 1,034 patients are currently in hospitals, Cooper said.

Hospitals and ICUs still have capacity, Cooper said, though officials are concerned about the future hospital capacity in the Charlotte area, said Dr. Mandy Cohen, secretary of North Carolina's Department of Health and Human Services.

12:45 p.m.: Fauci calls coronavirus 'a public health person's worst nightmare'

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, described the coronavirus as "a public health person's worst nightmare" at the "Future of Healthcare Summit" put on by The Hill.

"It's a spectacularly transmissible virus," he said.

Fauci recommended that states seeing a surge of cases consider pausing reopening.

"Rather than think in terms of reverting back down to a complete shutdown, I would think we need to get the states pausing in their opening process," he said. "Looking at what did not work well and try to mitigate that."

Fauci said states can help curb the spread by doing "very fundamental things," like closing bars, wearing masks, washing hands and maintaining social distancing.

"If you look at the curve, for example, in New York City, which was hit harder than any place in the world really, has been able to successfully bring down the number of new infections, hospitalizations and deaths to an extremely low level," Fauci said.

"In some of the southern states, the states have not really followed those guidelines," he said.

11:34 a.m.: Florida's positivity rate leaps to 18%

Florida's positivity rate has leapt by 4.3% and now stands at 18.3%, the state's Department of Health said Thursday.

Florida has a total of 332,783 people diagnosed with COVID-19. Of those, 17,167 people are in hospitals, according to the state data.

Miami-Dade County, which includes Miami, and Broward County, which includes Fort Lauderdale, are especially hard-hit.

Miami-Dade's positivity rate is 26.2%. Broward County's positivity rate has soared by 8.8% to reach 22.7%.

10:40 a.m.: Florida has 56 hospitals with no ICU beds

In Florida, 56 hospitals, including in Miami-Dade and Broward, reported zero ICU beds available, according to an internal FEMA memo obtained by ABC News.

Another 35 Florida hospitals reported that ICU capacity was at 10% or less, the memo said.

The number of available ICU beds are likely to fluctuate during the day.

Texas is also a hot spot, reporting 10,028 new COVID-19 cases on Tuesday -- the state's highest single-day increase, according to the memo.

The FEMA memo also noted that in Tennessee, people ages 21 to 40 are accounting for the majority of new and total cases.

Tennessee's number of new cases remains on the rise. Nashville, Memphis, Chattanooga and Knoxville are areas of particular concern, the memo said.

10 a.m.: At least 26 Mississippi lawmakers have COVID-19

At least 26 Mississippi legislators have the coronavirus -- which accounts for about one in every six state lawmakers, The Mississippi Clarion Ledger reported.

Ten other cases are linked to the lawmakers' outbreak, the Ledger said.

Mississippi is "seeing numbers as high as we have seen at any point since the very beginning," Gov. Tate Reeves said Wednesday, as he warned that the overwhelmed health system is a "slow-moving disaster."

As of July 5, Mississippi had 609 hospitalizations with confirmed infections, 165 ICU patients and 98 ventilated patients -- all of which are near record levels for the state, according to an internal FEMA memo obtained by ABC News.

Mississippi was one of the first states to reopen businesses in late April, but on July 1 the governor said he would pause a full reopening given the rising cases.

Face masks are currently not required statewide, but on Wednesday Reeves said he's not ruling that out.

9:30 a.m.: More cases among teens, young adults near Chicago

There's been an upward trend in coronavirus cases among teens and young adults over the last two weeks in Lake County, Illinois, about 40 miles north of Chicago, the county health department said Wednesday.

"We are finding that many young people who attended social gatherings with their friends have become infected," Dr. Sana Ahmed, medical epidemiologist for the county, said in a statement.

The health department said it's working closely with Lake Zurich High School after multiple cases were linked to athletic camps.

The school has suspended camps until further notice and participants of the poms, football and baseball camps were asked to quarantine for two weeks, the county said.

A case was also linked to an athlete at Vernon Hills High School, the county said.

Illinois on Wednesday reported its biggest single-day increase in COVID-19 cases in a month, reported ABC Chicago station WLS.

Illinois has over 149,000 diagnosed cases and at least 7,099 deaths.

8:24 a.m.: ICU ward at the heart of Italy's outbreak is now coronavirus-free

The main hospital in Bergamo, one of Italy's hardest-hit cities in the coronavirus pandemic, has had its first day without any COVID-19 patients in intensive care.

A spokesperson for Papa Giovanni XXIII hospital told ABC News on Thursday that, "after 137 days, there are no more patients COVID-19 positive in the ICU wards."

Italy once had the highest number of COVID-19 cases and deaths in the world, with the epicenter in the country's northern region. The outbreak there now appears to be under control.

In total, more than 242,000 people in Italy have been diagnosed with COVID-19 and at least 34,914 have died -- the fourth-highest death toll, according to a count kept by Johns Hopkins University.

7:15 a.m.: CDC chief says reopening schools is 'critical public health initiative'

The director of the U.S. Centers for Disease Control and Prevention said he believes reopening schools is "a critical public health initiative."

Speaking to ABC News chief anchor George Stephanopoulos on "Good Morning America" on Thursday, Dr. Robert Redfield said the CDC's guidance for protecting against the novel coronavirus remains the same but that the agency will be providing "additional reference documents" to aid communities wanting to reopen their K-12 schools this fall.

The CDC chief noted that the guidelines are not requirements.

"The one thing I really want to say that would personally sadden me, and I know my agency, is if individuals were to use these guidances that we put out as a rationale to keep schools closed," Redfield said.

Redfield's comments come after President Donald Trump threatened on Twitter to "cut off funding" to schools that don't reopen in the fall and criticized the CDC's guidance as "very tough," "expensive" and "impractical."

During Wednesday's press briefing, Vice President Mike Pence told reporters that the CDC would revise its guidance next week in response to Trump's critique.

"It's not a revision of the guidelines; it's just to provide additional information to help the schools be able to use the guidance we put forward," Redfield said on "GMA."

The CDC's current guidance for reopening schools calls for 6 feet of space between desks, staggered scheduling and the use of face masks.

When pressed on which of those guidelines were too tough or impractical and would be relaxed next week, Redfield said the CDC would continue working with communities to decide which preventative strategies work best for them.

"These decisions about schools are local decisions," he added. "We're prepared to work with any school and school district to see how they can take these guidances, this portfolio of strategies, and do it in a way that they're comfortable that they can reopen their schools safely."

6:03 a.m.: Ohio State pauses sports workouts after receiving results of COVID-19 testing

The Ohio State University athletics department announced Wednesday night that it has paused all voluntary workouts on campus following the results of its most recent coronavirus testing of student-athletes.

The move affects the workouts of seven teams at the school, which include men's and women's basketball, field hockey, football, men's and women's soccer and women's volleyball.

The university previously revealed Wednesday that a total of 125 student-athletes have been tested for COVID-19 as part of proactive screening prior to the start of voluntary summer workouts on campus. At least eight of those test results were positive, according to Columbus ABC affiliate WSYX.

It's unknown how many others have tested positive since then.

"The university is not sharing cumulative COVID-19 information publicly as it could lead to the identification of specific individuals and compromise their medical privacy," The Ohio State University Department of Athletics said in a statement Wednesday. "The health and safety of our student-athletes is always our top priority."

A student-athlete who tests positive for COVID-19 will self-isolate for at least 14 days and receive daily check-ups from the athletics department's medical staff. Student-athletes who live alone will isolate in their residence, while those with roommates will isolate in a designated room on campus, according to the Ohio State University Department of Athletics.

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4:52 a.m.: 3-year-old girl battles COVID-19 after 35-year-old mother dies from virus

A toddler in Florida has tested positive for COVID-19 after her mother died from the disease, according to a report by Miami ABC affiliate WPLG.

Shaquana Miller Garrett, 35, contracted the novel coronavirus while working at the front desk of a hospital in Fort Lauderdale. She was a diabetic, considered a higher risk of becoming severely ill with the virus, and had to be hospitalized within days of her diagnosis, her family told WPLG.

Garrett died on July 2, leaving behind a husband and two young children. So far this month, more than a dozen people under the age of 60 have died from COVID-19 in Miami-Dade and Broward counties, according to WPLG.

"She was my best friend," her brother, Curtis Miller, told WPLG.

Now, her 3-year-old daughter Kennedy is battling the virus. The little girl has developed a fever, according to Miller.

3:27 a.m.: US records over 58,000 new cases in a single day

More than 58,000 new cases of COVID-19 were identified in the United States on Wednesday, bringing the national total soaring past 3 million, according to a count kept by Johns Hopkins University.

The latest daily caseload is just under the country's record set on Tuesday, when more than 60,000 new cases were identified in a 24-hour reporting period.

A total of 3,055,081 people in the United States have been diagnosed with COVID-19 since the pandemic began, and at least 132,309 of them have died, according to Johns Hopkins. The cases include people from all 50 U.S. states, Washington, D.C., and other U.S. territories as well as repatriated citizens.

By May 20, all U.S. states had begun lifting stay-at-home orders and other restrictions put in place to curb the spread of the novel coronavirus. The day-to-day increase in cases then hovered around 20,000 for a couple of weeks before shooting back up and crossing 60,000 for the first time Tuesday.

Many states have seen a rise in infections in recent weeks, with some -- including Arizona, California and Florida -- reporting daily records.

ABC News' Anne Flaherty, Matt Fuhrman, Will Gretsky, Josh Hoyos, Mina Kaji, Aaron Katersky, Amanda Maile, Josh Margolin, Arielle Mitropoulos, Sophie Tatum and Scott Withers contributed to this report.