A new coronavirus strain that has swept through hospitals across the country has sparked new concerns for the health of patients and staff, with many of those patients struggling to survive, according to a study.

The report released Thursday by the National Institutes of Health and the University of North Carolina found that about one in four cardiac arrests in the United States is the result of a coronaviruses infection.

The study did not look at the causes of those deaths.

The findings also are at odds with what some health officials have said, saying that the new strain has slowed the spread of the virus.

The new strain of coronaviral disease was first identified in the U.S. in March.

In a report last month, the Centers for Disease Control and Prevention said the new virus is highly lethal and is highly contagious.

The CDC has said that it is now investigating more than 1,000 deaths linked to the new coronovirus.

“The new virus poses a threat to our society as well as to our nation’s ability to provide care,” CDC Director Tom Frieden said at a news conference on Thursday.

The number of hospitalizations and deaths associated with the new pandemic has grown since the CDC released its first report in October, according the report.

The outbreak has affected patients in all ages, with about 70 percent of people older than 65 and nearly all of those older than 50 suffering from cardiac arrest.

“We are seeing increased incidence of the new COVID-19 coronavillavirus and a rise in hospitalizations,” Dr. Michael Schick, director of the Center for Disease Dynamics and Prevention, told reporters Thursday.

Hospitals are treating patients with respiratory distress or pneumonia and using sedatives and other methods to slow the spread.

“This is the first time we have seen a spike in hospitalization for patients who are older and the first for cardiac arrest,” Schick said.

But Dr. Jennifer Pfeifer, an epidemiologist at the University in Toronto who was not involved in the study, said there are other reasons for the spike.

“It may be that there’s been a lack of proper care for older patients,” she said.

Pfeif and other experts are urging doctors to monitor patients closely for signs of a COVID infection.

Patients in the hospital often may be taking medications to slow their breathing, or they may have been in a coma, she said, and it is important for doctors to get to know patients.

“That can indicate that they’re in distress,” she added.

PFEIF said it is difficult to say exactly how the new strains affect patients.

She said some patients may have had mild or moderate symptoms.

“I’m sure we’ll find out more about that in the coming weeks,” she told reporters.

Health officials say that coronaviremia is caused by two viruses, COVID1 and COVID2.

The first strain is caused primarily by the coronavira, which is found in saliva and secretions from the mouth and throat.

The second strain, which has been linked to hospitalizations, is caused largely by the respiratory virus, which lives in the airways and can travel from person to person.

Both strains are highly contagious, causing symptoms of coughing and shortness of breath.

Both are highly pathogenic.

The virus can spread to other people through contaminated or expired food, contaminated water, contact with an infected person’s blood or body fluids, or contact with infected surfaces.

The two viruses can also cause the body to react to the environment, resulting in coughing, chest pain, fever, joint swelling, swelling in the neck, and pneumonia.