In an inspection report released Tuesday, the Health Department revealed some hygiene and infection control deficiencies at the center.
The state health department says there are four confirmed adenovirus cases among pediatric patients at Voorhees Pediatric Facility.
The New Jersey Department of Health is working with Camden County health officials and Voorhees' administrators to control the outbreak and identify other cases. Authorities confirmed the virus killed eight of the nine children, all of whom were "medically fragile" with compromised immune systems, state officials said.
While the age of the 10th child who died was not given, the ages of the first nine patients who succumbed to the virus ranged from toddler to young adults, a lot of them under 18.More news: John Mayer, Chance the Rapper pay tribute to Mac Miller
Officials have said there is not a wider public health concern stemming from the outbreak. New regulations requiring that long-term care facilities have an infection preventionist responsible for the facility's infection prevention control program on-site begin November 28. The previous date had been Monday.
The outbreak won't be considered over until four weeks without a new illness go by.
Adenoviruses frequently cause mild to severe illness with cold-like symptoms, particularly in young children. The state Department of Health is waiting for additional laboratory test results from the CDC but preliminary results have ruled out Type 7, which has been blamed for the deadly outbreak at the Wanaque Center.
Adenovirus usually poses little risk for healthy people. But it can be serious in people with weakened immune systems, like those at the centre.More news: Wayne Rooney to return to England squad for friendly match against USA
Elnahal had earlier said all the cases of the outbreak occurred in a respiratory, or ventilator, unit.
It said that at least 27 children at the center have become ill, CNN reported.
Despite the state's assurances that they're trying to limit exposure, CBS2 spoke with a patient who described the grisly conditions he says he encountered at the center.
The facility is not admitting any new patients while the outbreak is still being dealt with.More news: UN agency accuses authorities of delaying much-needed aid to Yemen