The recent diagnosis of hantavirus pulmonary syndrome (HPS) in two Californians, one of whom died, has prompted Dr. Ron Chapman, director of the California Department of Public Health (CDPH) and state public health officer, to remind Californians to take precautions to prevent exposure to the virus that causes HPS at their places of residence, work, and recreation. https://www.nps.gov/yose/learn/news/hanta_2012.htm