"We are saddened by this man's death. He had no other identifiable major health conditions," Solano Public Health Officer Ronald W. Chapman said.
Health officials are not releasing the man's identity or city of residence to protect his confidentiality.
There are 11 confirmed H1N1 cases in Solano County and thousands more in the state, Solano County health officials said. The vast majority of the cases have been mild to moderate with full patient recovery.
Only cases involving hospitalizations and fatalities are being laboratory tested, county health officials said.
Dr. Mark Horton, director of the California Department of Public Health, urged Californians today to keep taking precautions against the spread of the H1N1 /*swine flu*/ still present despite the end of the regular flu season.
Ten of the 17 Californians who died from the /*H1N1*/ virus had pre-existing health conditions including chronic respiratory disease like asthma and emphysema, the state Department of Public Health said.
Another common factor appears to be obesity and morbid obesity, state health officials said.
Sonoma County health officials said an elderly man with pre-existing medical conditions and a probable cause of the H1N1 virus died Friday. The virus has not yet been confirmed.