The rapid expansion of COVID-19 vaccinations to senior citizens across the U.S. has led to bottlenecks, system crashes and hard feelings in many states because of overwhelming demand for the shots.

Mississippi’s Health Department stopped taking new appointments the same day it began accepting them because of a “monumental surge” in requests. People had to wait hours to book vaccinations through a state website or a toll-free number Tuesday and Wednesday, and many were booted off the site because of technical problems and had to start over.

In California, counties begged for more doses of the COVID-19 vaccine to reach millions of their senior citizens. Hospitals in South Carolina ran out appointment slots within hours. Phone lines were jammed in Georgia.

“It’s chaos,” said New York City resident Joan Jeffri, 76, who had to deal with broken hospital web links and unanswered phone calls before her daughter helped her secure an appointment. “If they want to vaccinate 80% of the population, good luck, if this is the system. We’ll be here in five years.”

Up until the past few days, health care workers and nursing home patients had been given priority in most places around the U.S. But amid frustration over the slow rollout, states have thrown open the line to many of the nation’s 54 million senior citizens with the blessing of the Trump administration, though the minimum age varies from place to place, at 65, 70 or higher.

On Thursday, New Jersey expanded vaccinations to people between 16 and 65 with certain medical conditions — including smokers, who are more prone to health complications.

The U.S., meanwhile, recorded 3,848 deaths on Wednesday, down from an all-time high of 4,327 the day before, according to Johns Hopkins University. The nation’s overall death toll from COVID-19 has topped 385,000.

More than 11.1 million Americans, or over 3% of the U.S. population, have gotten their first shot of the vaccine, a gain of about 800,000 from the day before, the Centers for Disease Control and Prevention said Thursday. The goal of inoculating anywhere between 70% and 85% of the population to achieve herd immunity and conquer the outbreak is still many months away.

Hard-hit Los Angeles County, the nation’s most populous county with 10 million residents, said it couldn’t immediately provide shots to the elderly because it had inoculated only about a quarter of its health care workers.

“We’re not done with our health care workers, and we actually don’t have enough vaccine right now to be able to get done more quickly,” Public Health Director Barbara Ferrer said. “We haven’t heard back from the state about vaccine availability and how it would be distributed.”

Santa Clara County health officials said the county of 2 million people had only enough vaccine to inoculate people 75 and older, not the 65-and-older crowd.

“It’s almost like a beauty contest. And this should not be a beauty contest,” County Supervisor Cindy Chavez said. “This is about life and death.”