Some of the deeply unsettled witnesses even believe that the clip captures a haunting.
The balloon drifts purposefully along a corridor towards the camera, in a manner quite unlike the usual movement of helium or air-filled balloons - leading some to claim it is the ghost of a dead child.
It continues to move slowly and constantly towards the person filming, who is standing on the threshold of a room.
Two employees’ voices - one male and one female - can be heard on the recording.
The man says: "It’s coming towards us!"
His female colleague responds: "The girl on the bed said they touched her leg. Oh, no, it’s coming towards us!"
The footage then cuts to the employees standing in what seems to be a staff kitchen, filming the entrance to the room.
Suddenly, the balloon appears and as if possessed, it turns and goes inside the room, and the two people shriek and run away scared.
The footage of the incident has also caused concern among online viewers after it was recorded in the Victor Vilela Children’s Hospital in central Argentina’s city of Rosario.
Read Full Story: Mirror UK