900 doses of the swine flu vaccine have gone to Wisconsin prisons, but most of them were used on staff members.

John Dipko with the Department of Corrections says it's important to make sure guards and other workers are immunized in case there's a swine flu outbreak in the prison system.

He says about 45 very high-risk inmates already got the shot and at some point, other inmates who are considered high risk could also get the vaccine. But he says right now the prison system is concentrating on stopping the spread of the swine flu by making sure people are following proper hygiene guidelines, like hand washing.