PHOTO: Centers for Disease Control and Prevention/Dr. G. William Gary, Jr.
Now playing
01:10
Multiple children dead from virus in New Jersey
Greg Manteufel.
PHOTO: WITI;GREG MANTEUFEL
Greg Manteufel.
Now playing
01:25
Man becomes amputee after dog lick infection
Now playing
01:35
What is flesh-eating bacteria?
A young girl, with cholera symptoms is treated at the Cholera Treatment Center of Diquini in Port-au-Prince, Haiti on 23 August, 2016. 
The cholera epidemic that started in 2010 has infected some 800,000 and killed nearly 10,000 people.  / AFP / HECTOR RETAMAL        (Photo credit should read HECTOR RETAMAL/AFP/Getty Images)
PHOTO: HECTOR RETAMAL/AFP/Getty Images/FILE
A young girl, with cholera symptoms is treated at the Cholera Treatment Center of Diquini in Port-au-Prince, Haiti on 23 August, 2016. The cholera epidemic that started in 2010 has infected some 800,000 and killed nearly 10,000 people. / AFP / HECTOR RETAMAL (Photo credit should read HECTOR RETAMAL/AFP/Getty Images)
Now playing
01:13
What is cholera?
This scanning electron micrograph, SEM, revealed some of the ultra structural morphologic features of a Klebsiella pneumoniae bacterium. K. pneumoniae is a non-motile, Gram-negative rod, and a facultative anaerobe, which means that it is able to adapt to
PHOTO: Media for Medical/Universal Images Group Editorial/UIG via Getty Images
This scanning electron micrograph, SEM, revealed some of the ultra structural morphologic features of a Klebsiella pneumoniae bacterium. K. pneumoniae is a non-motile, Gram-negative rod, and a facultative anaerobe, which means that it is able to adapt to
Now playing
01:15
What is pneumonia?
PHOTO: Getty Images
Now playing
01:39
4 ways the flu turns deadly
norovirus explainer Cohen orig_00003306.jpg
PHOTO: Getty Images
norovirus explainer Cohen orig_00003306.jpg
Now playing
01:11
How viral is norovirus?
ecoli dangers explainer elizabeth cohen orig_00000404.jpg
ecoli dangers explainer elizabeth cohen orig_00000404.jpg
Now playing
01:24
The dangers of E. coli
Salmonella enterica bacteria become more virulent and therefore better at causing disease in the micrograity environment of space.
PHOTO: Courtesy of CDC.
Salmonella enterica bacteria become more virulent and therefore better at causing disease in the micrograity environment of space.
Now playing
01:09
Salmonella 101: What you need to know
PHOTO: James Gathany/CDC
Now playing
01:55
What is the Zika virus?
PHOTO: Jim Gathany / CDC
Now playing
01:36
What is malaria?
enterovirus d68 cohen mg orig_00001503.jpg
enterovirus d68 cohen mg orig_00001503.jpg
Now playing
01:40
What is Enterovirus?
This illustration depicts a three-dimensional (3D) computer-generated image of a grouping of Listeria monocytogenes bacteria. The artistic recreation was based upon scanning electron microscopic (SEM) imagery.
PHOTO: CDC
This illustration depicts a three-dimensional (3D) computer-generated image of a grouping of Listeria monocytogenes bacteria. The artistic recreation was based upon scanning electron microscopic (SEM) imagery.
Now playing
01:20
What is listeria?
cdc director superbug antibiotics frieden intv_00003313.jpg
PHOTO: CDC
cdc director superbug antibiotics frieden intv_00003313.jpg
Now playing
02:07
CDC sees 'steady increase' in drug-resistant bacteria
uk ebola discovery spread soares pkg_00004912.jpg
PHOTO: Courtesy CDC
uk ebola discovery spread soares pkg_00004912.jpg
Now playing
02:28
The origin of the Ebola virus
PHOTO: KNXV
Now playing
00:46
Flu diagnosis ends up being flesh-eating disease
(CNN) —  

After her 15-year-old son ended up “in critical and life-threatening condition” from an adenovirus outbreak at a New Jersey health care facility, one mother is suing those who she believes allowed her son to end up in the ICU, according to a lawsuit filed Wednesday.

Paula Costigan’s son, William DelGrosso, was one of dozens of medically fragile children who were infected with the virus beginning in late September at the Wanaque Center for Nursing and Rehabilitation in Haskell, New Jersey.

As of Friday, 31 residents have been affected by the outbreak, including 10 deaths, according to the state health department. DelGrosso remains hospitalized.

According to the lawsuit, DelGrosso came down with a fever on October 11 and was transferred to the intensive care unit at Hackensack University Medical Center on October 18 with “serious respiratory complications.” He is still there now, according to the family’s lawyer, Paul da Costa.

“As a mother, it’s hard enough to not have your child under your own roof and have to trust and rely on a facility to care for your child,” da Costa said, adding that Costigan “feels as if the facility was trying to hide the fact there was this serious virus spreading like wildfire.”

The Wanaque Center declined a request for comment on the lawsuit.

’Kids like William’

Costigan doesn’t know where her son will go when he’s stable enough to be discharged from intensive care, da Costa said.

DelGrosso, who has a seizure disorder, has required a ventilator to breathe since he was about 10 years old, when he went into cardiac arrest after a major seizure, da Costa said.

There are four long-term care facilities in New Jersey that cater to children, according to a state health department database. This includes the Wanaque Center and the Voorhees Pediatric Facility, where seven kids have been infected with a milder strain of adenovirus, according to the state health department. There have been no deaths among the Voorhees patients.

Costigan doesn’t want her son to go back to the Wanaque facility, but she’s been told that the other centers in the state that accept Medicaid and are equipped to take care of a ventilator-dependent child like her son may have up to a one-year wait list, according to da Costa.

The lawsuit alleges that the facility neglected to provide the care DelGrosso needed when it came to preventing such an infection from spreading.

“At the time of the initial case of adenovirus,” the lawsuit alleges, the facility “did not have proper infection prevention and control programs, protocols, or procedures in place to remedy the infection and prevent it from spreading throughout its pediatric residents.”

The lawsuit also alleges that the facility didn’t send patients to acute care hospitals in a timely manner or notify parents earlier, around the time when it first contacted the state health department about the outbreak, on October 9.

Costigan told da Costa that “she was never informed that her son had high fevers several days before they ultimately told her that he needed to be transferred immediately to an acute care hospital” on October 18, he said. And she wasn’t notified about the adenovirus outbreak until a form letter arrived in the mail four days later, he added.

In statements last month, the Wanaque facility said that it’s working alongside health experts to investigate the outbreak and that it “promptly notified all appropriate government agencies when the virus was initially identified.” The facility did not respond to earlier requests for further comment.

Da Costa says the lawsuit isn’t just about Costigan’s son; it’s about “kids like William who have the inability to speak for themselves and to care for themselves.”

The lawsuit references health inspections dating back several years, including an unannounced inspection on October 21 that found deficient hand hygiene practices among staff. This inspection was conducted after health officials had been alerted by the facility but before the health department publicly announced any deaths.

The facility has received and corrected other deficiencies in the past, including improperly stored syringes, which were used to measure liquid medication, and over-bed tables and medication trays that were not properly cleaned and disinfected.

Speaking to reporters last month, New Jersey Department of Health Commissioner Dr. Shereef Elnahal described these as “low-level, self-limited deficiencies” that were resolved when health inspectors rechecked.

In a review by the federal Centers for Medicare and Medicaid Services, the Wanaque Center was awarded an above-average ranking in overall quality but a below-average health inspection rating. The rating is based on two years of inspections before November 2017. The Wanaque facility’s deficiencies have consistently been lower in number than the US average.

“It is rare that in any inspection a facility would come out with no citations,” Elnahal said. “If it’s a number of citations, all of which are low-level, we ask for a plan of correction. We make sure the facility follows through – and that’s what this facility did here.

“If the findings are severe enough to take further action, we will,” he added.

The infections and deaths come amid questions – from former Wanaque Center employees, the mother of one of the children who died, and Elnahal himself – about whether current facility standards are high enough and whether more could have been done to prevent this from happening.

Elnahal previously said in a statement that the findings of the most recent health inspection at the Wanaque facility “raise questions about whether these general longterm care standards are optimal for this vulnerable population of medically fragile children.”

“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.”

’We are taking aggressive steps’

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.

At the Wanaque facility, the patients with confirmed cases became ill between September 26 and November 8, according to the health department. The number has risen from 18 cases, including six deaths, announced last month by the health department.

Get CNN Health's weekly newsletter

Sign up here to get The Results Are In with Dr. Sanjay Gupta every Tuesday from the CNN Health team.

The outbreak in the Wanaque facility was caused by adenovirus type 7. This type is “most commonly associated with acute respiratory disease,” according to the CDC. Other types of adenovirus infections can cause flu-like symptoms, pinkeye and diarrhea.

Health officials say they are stepping up efforts to strengthen infection control at such facilities in the state. The health department announced plans last week to deploy a team of infection control experts to visit University Hospital and four pediatric long-term care facilities this month, 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 last week.

The facility has been “instructed not to admit any new patients until the outbreak ends and they are in full compliance,” according to the state health department. State health officials have said the outbreak can be declared over only when four weeks pass without an additional case.

“It can be difficult to impossible to know how the virus got to the facility, what its source was, or what its specific mechanism of spread is from person to person,” Elnahal said.

CNN’s Olivia Kiely and Kristina Sgueglia contributed to this report.