...inflammation of the brain, in late August. The Health Department did not identify man, but last week the family of Dr. David Dahlin said the 86-year-old Rochester man was killed by the mosquito-borne virus. Dahlin was a retired Mayo Clinic surgical...

...the virus was the cause of death last week. He also had developed encephalitis. The unofficial fourth death was Dr. David Dahlin, 86, his family said. Dahlin was a retired Mayo Clinic surgical pathologist and expert in bone tumors who lived in...