(CNN)Ten children have died and 18 others have become sick in connection with an adenovirus outbreak at a New Jersey health care facility, the state's Department of Health announced Thursday.
10th child dies from adenovirus outbreak in New Jersey
The patients are children with serious medical issues, many of whom require assistance to breathe and function, at the Wanaque Center for Nursing and Rehabilitation in Haskell, New Jersey.
The confirmed cases became ill between September 26 and October 30, according to the health department. The number of illnesses has risen from 18 cases, including six deaths, announced last week by the health department.
"They range in age from toddlers to young adults," New Jersey Department of Health Commissioner Dr. Shereef Elnahal said last week. "Some have been hospitalized, and some are being cared for at this facility."
A staff member was also affected by the outbreak but has recovered.
The health department also announced Wednesday that four cases of adenovirus were found among kids at a second New Jersey facility, Voorhees Pediatric Facility. However, preliminary tests suggest that it's a different strain than the one in Wanaque, and these patients are not in critical condition.
Health officials say they are stepping up efforts to strengthen infection control at such facilities in the state. On Monday, the health department announced plans to deploy a team of infection control experts this month to visit University Hospital and four pediatric long-term care facilities, including the Wanaque and Voorhees facilities, where experts will train staff and evaluate how these facilities prevent and control infections.
"Facility outbreaks are not always preventable, but in response to what we have seen in Wanaque, we are taking aggressive steps to minimize the chance they occur among the most vulnerable patients in New Jersey," Elnahal said in a statement Monday.
Adenoviruses are often spread by touching a contaminated person or surface, or through the air by coughing or sneezing. They are known to persist on unclean surfaces and medical instruments for long periods of time, and they may not be eliminated by common disinfectants, but they rarely cause severe illness in healthy people. However, people with weakened immune systems have a higher risk for severe disease, and they may remain contagious long after they recover, according to the US Centers for Disease Control and Prevention.
Symptoms may appear two to 14 days after being exposed to the virus, the state health department said.
The outbreak in the Wanaque facility was caused by adenovirus type 7. This type is "most commonly associated with acute respiratory disease," the CDC says. Other types of adenovirus infections can cause flu-like symptoms, pinkeye and diarrhea.
"We are working every day to ensure all infection control protocols are continuously followed and closely monitoring the situation at the facility," Elnahal said.
The Wanaque outbreak was caused by an adenovirus strain known to affect "communal living arrangements," according to the state health department -- but some wonder whether more could have been done to prevent this, according to former employees and the mother of one child who died as a result of the outbreak.
"I'm upset that the kids I took care of -- that were all getting better and getting stronger and learning to walk -- are now dead," said Javier Guzman, who worked at the Wanaque facility for nearly five years as a recreational assistant until March 2017, when he said multiple staffers were let go.
"They were such beautiful, happy little children. They may have had compromised immune systems, but they led normal children lives. All they wanted to do was play and sing and clap," Guzman said.
Former employees said it came as a shock to hear about deaths among young residents at the facility. In some cases, former employees described a facility in need of maintenance, as well as cleaning and infection control practices that appeared to be lacking -- including an air filter that needed cleaning, a leaky ceiling and an ice machine collecting what appeared to be mold. The former employees said these issues were reported to management.
However, another former employee, who requested not to be named and left the facility to pursue another career, said she had a positive experience at the Wanaque Center, whose maintenance staff she generally found to be responsive. She said she believes that the facility met industry standards but, speaking more generally, that those standards might be too low across an industry she described as chronically understaffed and underpaid.
The facility did not respond to CNN's questions about comments made by former employees.
Nurses at the facility had reported a shortage of nursing staff and supplies, according to a statement last week from the union that represents the nursing staff. The Health Professionals and Allied Employees said the shortages may have led to "poor infection control practices."
The union said it represents 70 nurses who work at the Wanaque Center.
On Tuesday, state health officials released the complete findings of an unannounced inspection conducted on October 21 -- after they had been alerted by the facility and before the health department publicly announced the deaths. Inspectors found deficient hand hygiene in four of six staffers observed but noted that the facility followed a number of measures in line with existing recommendations, such as having protective equipment outside rooms and posting signs with adenovirus precautions.
"Now that the report is finalized, certain findings raise questions about whether these general longterm care standards are optimal for this vulnerable population of medically fragile children," Elnahal said in a statement. The statement added that federal regulations will require an "on-site infection preventionist" at places like the Wanaque Center starting in November 2019. "We also need to think about whether there is more we can do as healthcare leaders to protect immunocompromised children, such as those served at Wanaque Center," he said.
"Every year in the state, there are hundreds of outbreaks at healthcare facilities," Elnahal added.