FOREST HILLS, Pa. -- A mysterious virus hit a Pittsburgh-area care home, sickening dozens of residents. One family is now trying to find out if that virus is what killed their father, and if the home could have done more to help him.

Team 4's Paul Van Osdol reported that Aldo Giannini was 85, but his daughter said that he was in good health and that she was shocked when she got word that the decorated World War II combat veteran was dead.

Last October, Giannini moved into the Juniper Village assisted living home in Forest Hills.

Early on Nov. 10, Kim Bogesdorfer, of Monroeville, rushed to the home after getting a call that he had died.

"I asked the question, 'Did my father die in his sleep peacefully?' And the response was, 'Yes,'" Bogesdorfer said.

But she started having questions when she saw her father's body in his room

"There was the liquid behind him that he had gotten sick from or with," said Bogesdorfer.

She also had questions when she saw a document from the Woodland Hills EMS saying Juniper Village staff last saw Gianinni alive around 5 a.m. But the ambulance was not dispatched until 6:47 a.m.

She still does not know when her father became ill, or what led Juniper Village to call for an ambulance.

"And all we want to know as a family is what happened to my father," Bogesdorfer said.

Following Giannini's death, the state investigated and last month cited Juniper Village for failing to provide CPR to Giannini before EMS arrived. Juniper Village responded that it will require staff to take a CPR refresher course and do regular reviews of CPR protocol.

Juniper Village's New Jersey-based parent company declined to comment on Giannini's case. But in a prepared statement, the company said it is fully licensed by the state. The statement also said, "Our staff works to promote a positive atmosphere for the individuals who call Juniper Village home and provide for their needs."

Two days after Giannini's death, the Allegheny County Health Department sent Juniper Village's administrator an e-mail saying they still did not know what caused so many residents to get sick.

This week, a Health Department spokesman told Team 4 they never did find out what caused the illnesses or Giannini's death.

Giannini's family did not get any answers when they saw his death certificate listing chronic renal failure and emphysema as contributing causes. That was the first time Bogesdorfer had ever heard any doctor mention those ailments, and she accompanied her father to all his medical appointments.

Team 4 obtained Giannini's medical records, and they make no mention of either condition when he was admitted to Juniper Village just six weeks before his death.

Team 4 also talked to the doctor who signed the death certificate.

Dr. Isaac Levari said, "the death certificate represents my best medical opinion given the circumstances and the information I had. I am not a coroner or a medical examiner or a pathologist."

Bogesdorfer said she asked for an autopsy but the medical examiner refused because of her father's age. Now she's hired former county coroner Dr. Cyril Wecht to exhume his body and do an autopsy, hopefully answering her questions.

"My father may have had one more joke to tell, one more story to tell and one more holiday to spend with his family, and I would say he should be allowed to have that joy," Bogesdorfer said.

She's also hoping other families can learn from her experience.

If a loved one is going to or already in a person care home, experts say you should check it out. Visit the home often and at different times of day. Look to see if residents and staff appear happy. Also, review inspection reports and check to see if the home has a provisional or full license.