14 Workers, Including Some Renovating a Yale Building, Hospitalized for Carbon Monoxide Poisoning

NEW HAVEN, Conn.—Blood tests of a construction worker who collapsed Wednesday outside a building owned by Yale University led emergency crews to uncover potentially lethal levels of carbon monoxide inside. Another 13 people were hospitalized, but the discovery may have prevented a much larger catastrophe, officials said. “There was a disaster averted here,” said Rick Fontana, New Haven’s emergency operations director. “You could have had a lot more sick or a lot more death had this gone on for a longer period of time.” Emergency crews initially thought they were responding to a “regular medical call” Wednesday morning when they brought the collapsed unconscious man to the hospital, Mr. Fontana said. However, an hour-and-a-half later, the hospital informed them that the worker had extremely high levels of carbon monoxide in his bloodstream....