A former doctor convicted of second-degree murder for infecting at least nine patients with hepatitis C was sentenced to life in prison on Thursday for his role in one of the largest U.S. outbreaks of the disease tied to a physician. Dipak Desai, 63, who infected patients by re-using syringes at his Las Vegas endoscopy clinic, will be eligible for parole after 18 years under the sentence imposed by Clark County District Judge Valerie Adair. "When a trust that a patient places in his or her physician is betrayed, I don't think there is a greater betrayal in our society," Adair said in sentencing Desai.