Worldwide coronavirus cases top 30 million

Utah on Thursday reported its highest single-day case count since the beginning of the pandemic, said Gov. Gary Herbert.

"This week, the state has seen a troubling spike in COVID cases after a promising August," Herbert tweeted, calling this "a wake up call."

"Fortunately, we have not yet seen a spike in hospitalizations or deaths related to this current spike -- but as those are lagging indicators -- we may see increased hospitalizations and deaths, much like we did from the surge in July," he said.

Herbert said he called an emergency meeting of Utah's Unified Command and is meeting with "local stakeholders, epidemiologists and medical experts to develop a targeted plan to contain these outbreaks." The governor also urged local leaders to make sure their policies are in the best shape possible.

ABC News' Matt Fuhrman contributed to this report.

In Texas -- which has the second highest number of coronavirus cases in the U.S. -- most of the state will allow businesses to operate at 75% capacity, up from 50%, beginning on Monday.

Rules for reopening are based on Texas' 22 "hospital regions." Nineteen of the 22 regions have less than 15% of hospital patients diagnosed with COVID-19, so those regions can reopen restaurants, retail, offices, museums, libraries and manufacturing at 75% capacity.

The only parts of the state where businesses cannot reopen at 75% capacity are the Rio Grande Valley, the Laredo area and the Victoria area. To qualify for a 75% capacity reopening, those locations must get their hospitals to under 15% COVID-19 patients for at least one week.

Bars across Texas are required to stay closed because they are "nationally recognized as COVID spreading locations," said Gov. Greg Abbott.

California has the most COVID-19 cases of any state, with more than 772,000 people diagnosed, while Texas ranks No. 2 with over 696,000 cases, according to Johns Hopkins data.

ABC News' Matt Fuhrman contributed to this report.

All travelers arriving at Abu Dhabi International Airport are required to undergo thermal screening, take a COVID-19 test and self-quarantine for two weeks.

After clearing immigration, those who arrive will also be required to wear a free, medically approved wristband during their self-quarantine, Etihad Airlines confirmed in a statement to ABC News.

Only United Arab Emirates (UAE) nationals are allowed to fly into Abu Dhabi International Airport. UAE nationals arriving at the airport would be exempt from wearing wristbands if they hold diplomatic passports, are under the age of 18, over the age of 60, or have a chronic disease.

According to the UAE government portal, authorities in Abu Dhabi have been using the technology to track and monitor people diagnosed with COVID-19 to make sure they are self-quarantining.

The UAE has over 81,000 COVID-19 cases and at least 402 fatalities, according to the state-run WAM news agency.

ABC News' Christine Theodorou, Clark Bentson and Ibtissem Guenfoud contributed to this report.

Alex Azar, Secretary of the Department of Health and Human Services, will testify before a House select subcommittee on Oct. 2 about the response to the pandemic.

This will be his first appearance before Congress since February.

According to the House Select Subcommittee on the Coronavirus Crisis, "The hearing will examine the Trump Administration’s unprecedented political interference in the work of scientists and public health experts at the Centers for Disease Control and Prevention and Food and Drug Administration, the Administration’s refusal to provide accurate and clear public health information, and the failure of the Administration to develop and implement a comprehensive national plan to contain the coronavirus, more than eight months into this public health emergency."

ABC News' Mariam Khan contributed to this report.