Gwinnett fire officials said multiple patients were evaluated and several were transported to the hospital with carbon monoxide poisoning at a Norcross apartment complex. It happened at the Vita Apartments along the 1300 block of Graves Road. Crews were initially dispatched for a sick person complaint and arrived to find 27 patients sick with similar symptoms, a fire official said. They said eight were hospitalized. They said none of the symptoms were life threatening. Residents of the 4-unit apartment building said that the power had gone out overnight and it was discovered a gas-powered generator was used to power one of the units. "Firefighters would like to remind citizens that while gas-powered generators are a useful tool during an extended power outage, their use can lead to a dangerous Carbon Monoxide hazard if not used properly," the Gwinnett Fire Department said in a statement.