The department said in a statement on Friday that the latest death involved a child who was "medically fragile with respiratory illness".
A general look of the marquee outside of the Wanaque Center For Nursing And Rehabilitation, where New Jersey state Health Department confirmed the 18 cases of adenovirus, Tuesday, Oct. 23, 2018, in Haskell, N.J.
The new diagnosis of adenovirus brings the total number of cases at the rehabilitation centre to 26. Twenty-five children have been sickened in the outbreak, as has one staff member at the facility.
The US health department said the most recent individual to be diagnosed in the outbreak would have fallen ill on or before 22 October.
Her mother says she was not made aware of the outbreak until Monday, the day before her daughter died and nearly three weeks after she was admitted to St. Joseph's Medical Center, NorthJersey.com reports.
A ninth person has died at a pediatric rehabilitation center amid an outbreak of a respiratory virus, New Jersey health officials said.
"This is a tragic situation, and our thoughts are with the families who are grieving right now", Health Commissioner Dr. Shereef Elnahal said. The CDC is also investigating the outbreak. They also note this strain has been particularly associated with disease in communal living facilities.
"The Department continues to work very closely with the facility to ensure that all infection control measures are being followed", the Wanaque facility said in a statement Wednesday.
Both the staff at the facility as well as state authorities are continuous in the efforts to contain the spread of the virus. The Centers for Disease Control and Prevention is also there helping with lab testing and other expertise. And for most patients, only home remedies and over-the-counter medicines to relieve symptoms are needed.
The bacterium can cause pneumonia or serious blood or wound infections.
Hospitals in more than 30 countries around the world are detaining patients who can't pay their bills, according to an investigation by the Associated Press.
"People know patients are being held prisoner, but they probably think they have bigger battles in public health to fight, so they just have to let this go", Sophie Harman, a global health expert at Queen Mary University of London, said.