JACKSON, Mississippi — Leo Carney worries that bigger crowds and maskless diners could endanger workers at the seafood restaurant where he manages the kitchen in Biloxi, Mississippi.

Maribel Cornejo, who earns $9.85 an hour as a McDonald’s cook in Houston, can’t afford to get sick and frets co-workers will become more lax about wearing masks, even though the fast-food company requires them.

As more jurisdictions join Mississippi, Texas and other states in lifting mask mandates and easing restrictions on businesses, many essential workers — including bartenders, restaurant servers and retail workers — are relieved by changes that might help the economy but also concerned they could make them less safe amid a pandemic that health experts warn is far from over.

Many business owners on the Mississippi Gulf Coast were glad Gov. Tate Reeves decided to eliminate mask requirements, limits on seating in restaurants and most other binding restrictions. “But the workers themselves... especially ones that have preexisting conditions, they’re scared right now,” Carney said.

“This just puts us back in a situation where we’re on the front lines, under the gun again,” said Carney, who sees Black Mississippians facing the greatest risks from the decision that took effect Wednesday. COVID-19 has disproportionately affected Black and Latino people in the United States, and many Gulf Coast restaurants have a significant number of Black employees.

Public health experts tracking the trajectory of more contagious virus variants have warned that lifting restrictions too soon could lead to another lethal wave of infections. Although vaccination drives are accelerating as drug manufacturers ramp up production, many essential workers are not yet eligible for COVID-19 vaccines in Mississippi and other states.

Alabama’s state health officer Friday advised residents to keep following standard infection-prevention recommendations even though the governor is letting the state’s mask mandate expire next month.

“There is nothing magical about the date of April 9. We don’t want the public to think that’s the day we all stop taking precautions,” State Health Officer Scott Harris said.

The governors of Iowa, Montana, North Dakota also have ended mask requirements or plan to suspend them soon. The governor of South Carolina on Friday lifted an executive order requiring face coverings in government office buildings and restaurants, leaving it up to state administrators and restaurant operators to develop their own guidelines.

Governors in several other states, including Louisiana and Michigan, eased the operating limits for bars, restaurants and other businesses in recent days.

The National Retail Federation, the largest retail trade association in the U.S., issued a statement Wednesday encouraging shoppers to wear masks. Some retail chains, including Target and supermarket operator Albertsons, plan to continue requiring them for both customers and workers in states that no longer make them mandatory.

Texas Retailers Association President and CEO George Kelemen said he thinks many members will continue to require workers — but not necessarily customers — to wear masks and other protective gear.

“Retailers know their customers best,” he said.

Cornejo, 43, said the end of Texas’ mask mandate this week alarms her because several of her co-workers already were lax about keeping their faces covered.

“There are just different attitudes,” said Cornejo, whose 19-year-old son began working as a cashier at the same restaurant to help pay the family’s bills.

The director of the Centers for Disease Control and Prevention, Dr. Rochelle Walensky, encouraged Americans to “do the right thing” by continuing to abide by recommendations for routine mask use and social distancing — even if their states lift restrictions.

Dr. William Schaffner, a professor of preventive medicine at Vanderbilt University in Tennessee, said individuals who wear masks still risk infection from unmasked shoppers and diners. He called Texas Gov. Greg Abbott’s decision to lift COVID-19 restrictions starting Wednesday “entirely too soon and entirely too carefree.”

The U.S. has had nearly 29 million infections and more than 524,000 deaths, according to Johns Hopkins University.