Preschool Enterovirus Victim Died in His Sleep

Eli Waller, 4, had no symptoms when he went to bed, health officials say.

— -- The New Jersey preschooler who died of the respiratory illness enterovirus 68 went to sleep and never woke up, health officials say.

The death of 4-year-old Eli Waller is the first to be blamed on the virus that has swept the country, but health officials say he went to bed with none of its symptoms, which include cold-like symptoms but in some cases can involve wheezing and difficulty breathing.

"I think Eli's case is the exception to the other cases around the country," said Jeffrey Plunkett, the Hamilton, New Jersey, health officer. "He had no signs of any illness that night, and his passing was sudden and shocking."

Eli, of Hamilton, New Jersey, was the youngest of three triplets, born "smaller and lighter than his sisters," but he was never one to let that stand in his way, his father Andy Waller said in a letter released Sunday evening. His siblings are "perfectly healthy," Plunkett said, but one of Eli's classmates was being tested for possible infection this morning.

"Eli was not the type to give up, and even though things never really came easily to him, he would just plug away, day after day, practicing sounds, or movements, or skills, until he would eventually get them," his father said.

"He did this entirely in an effort to make his Mom and Dad proud, and we can unequivocally say that we were, and will continue to be, so very proud of our little Eli," he said.

He compared his son to "a shy little puppy who wants only to make people proud and happy, maybe tripping a bit over his own paws, but truly full of unconditional love."

Andy Waller said the family was establishing The First Day of School Foundation, to provide support for students involved in Special Education.

"Like so many kids his age, Eli was both nervous and excited about starting school, and it is our sincere hope that this Foundation can work to help kids in a way that will make Eli proud of us all, in the same way that we were all so proud of him," he said.

Brain and lymph node swelling in the child was then determined to be a result of the virus.

At least four other patients who tested positive for the enterovirus 68 have died, and CDC and local medical officials are investigating whether the virus played a role in their deaths.

In Colorado, CDC and local health officials are investigating whether limb weakness and paralysis reported in nine children was associated with the enterovirus 68.

The Associated Press contributed to this report.