ALLENTOWN, Pa.—A malfunctioning heater sent a dangerously high level of carbon monoxide into a Pennsylvania day care center early Tuesday, sickening dozens of children—some of whom were unconscious as they were rushed to the hospital—and several adults.
More than 30 people were hospitalized. All were listed in stable condition.
Emergency responders went to the Happy Smiles Learning Center in Allentown, Pennsylvania, on reports of an unconscious child, and evacuated the building after a firefighter’s CO monitor was triggered.
The leak was caused by a malfunctioning heating unit and a blocked venting system, investigators said. They noted the building did not have carbon monoxide detectors….