Five people have tested positive for coronavirus in New Jersey, pushing the number of cases in the state to 11, officials said Monday.

In addition, there are 24 pending test cases at the state lab, New Jersey Department of Health officials said.

The five new cases announced Monday by state health officials include:

An 18-year-old from Clifton was exposed to coronavirus after having close contact on March 2 with a person in New York who was a known positive case. The Passaic County resident, who is not hospitalized showed an onset of symptoms Friday.

A 48-year-old Berkeley Heights resident was exposed to coronavirus after having contact with friends who traveled from Milan, Italy. The Union County resident showed an onset of symptoms March 1 and is hospitalized at Overlook Medical Center in Summit. The friends tested negative and the case remains under investigation. Officials called it an unusual case.

A 27-year-old Little Silver man who attended the attended the Biogen conference in Boston from Feb. 24-28 showed an onset of symptoms on Feb. 29. Though he is not hospitalized, 170 conference attendees have tested positive for coronavirus.

An 83-year-old Hazlet woman fell ill on March 3 and is hospitalized at Hackensack Meridian’s Bayshore Medical Center in Holmdel. It’s not known how she was exposed to the virus.

A 30-year-old from Teaneck began showing symptoms on March 3 and is hospitalized at Holy Name Medical Center in Teaneck. How the person got exposed to coronavirus is not known.

The earlier six “presumptive positive” tests for coronavirus include four cases in Bergen County, one case in Hudson County and one in Camden County.

State officials did not offer an updated list of locations for the 24 pending test cases.

The six New Jersey cases previously identified by state health officials include

A 70-year-old male healthcare worker from Teaneck, who is in stable condition in the ICU of St. Joseph’s Medical Center. He was admitted to the Paterson hospital Friday. He had an onset of symptoms Feb. 28, officials said.

A 32-year-old man from West New York, who is stable condition at Hackensack University Medical Center in Hackensack. He was admitted Thursday and his condition is currently unknown. This man also has not completed a full interview and it is not known who in New Jersey he came in contact with after his onset of symptoms, also on Feb. 28, officials said.

32-year-old man who lives in an apartment in Fort Lee and works in New York City, where he has another residence. The man, a health care worker, had traveled to Fort Lee alone on March 1 and had no contact with any other people while in town, according to Fort Lee’s mayor. The man was being treated for the coronavirus in Hackensack University Medical Center.

An Englewood woman in her 30s who sought treatment at Englewood Health Hospital in Bergen County. Officials said she was released from the hospital March 5 and is self-quarantined at her home. There was a gathering of 15 people at the woman’s home on Feb. 29; all of those people have been notified to self-quarantine.

A 61-year-old man from Cherry Hill, who was admitted to Jefferson Cherry Hill Hospital on March 3 and is in stable condition, according to state officials.

A 55-year-old Englewood man who was admitted to Englewood Hospital and Medical Center on March 4 and is in stable condition, according to state officials. The Englewood man attended services at Temple Young Israel in New Rochelle, New York — which a number of of New York coronavirus cases has been tied to — on Feb. 23. The Englewood man attended the Conservative Political Action Conference (CPAC) in Maryland, a spokeswoman for Gov. Phil Murphy told NJ Advance Media.

A handful of New Jersey districts have announced closures and early dismissals to give officials the opportunity to make coronavirus plans now that the state Department of Education has announced “home instruction” may count toward the required 180-day school year.

The U.S. death toll from the new coronavirus reached at least 21. The number of infections in the United States climbed above 500 as testing for the virus increased.

U.S. Surgeon General Jerome Adams said communities will need to start thinking about canceling large gatherings, closing schools and letting more employees work from home, as many companies have done in the Seattle, Washington, area amid an outbreak at a care home that has killed 18.

The Associated Press contributed to this report.