The Illinois Department of Public Health's weekly update brings the total number of deaths in the state from the virus to 56. More than 1,600 people have been hospitalized since April.

Most swine flu deaths have been in Cook County, but there also have been deaths in central and southern Illinois. The state's Health Department has a map online that shows which counties have reported deaths.

The site also has an online tool that shows where vaccine is available in each county.

More than 1.6 million doses of swine flu vaccine have been shipped to Illinois. In Chicago, public health officials say more than 75,000 people have been vaccinated.