Casper, WY – The Casper-Natrona County Public Health Department is celebrating its 50th anniversary next week. During its history, staff has prevented an outbreak of diphtheria, vaccinated people for many other infectious diseases and done work on chronic health problems. Director Bob Harrington says one major health crisis they dealt with happened last summer when there was an outbreak of Hepatitis B and C among methamphetamine users. It was so serious the Centers for Disease Control sent investigators. Harrington says the drug meth presents the biggest health concern for Wyoming and Natrona County. To mark its anniversary the Health Department has put out a book on the last 50 years. It will be available at local book stores on Monday.