One person died and 11 others were sickened by Legionnaires’ disease in California’s Napa County, health officials said, including three people who are still hospitalized with the rare illness.The Legionella bacteria that causes it has been detected in the cooling tower of the Embassy Suites Napa Valley in the city of Napa, the county health department said, but an investigation is ongoing and other sources are being tested. None of the 12 who were sickened in the outbreak that began July 11 stayed at the hotel and they were not employees, Napa County Public Health Officer Dr. Karen Relucio said at a Wednesday news conference. All 12 are residents of Napa County and not tourists, she said, and in many of the cases they live in the area where the hotel is.