Confirmed A/H1N1 flu cases in the US state of Illinois jumped again Friday to 393, according to state health officials.

Recent days have seen the numbers climb as state labs began taking over from the federal health authorities, and a backlog of samples from possibly infected patients has been cleared. There is only one probable case unconfirmed in Illinois.

In Illinois, 258 cases were confirmed by Thursday, with 22 more probable cases being investigated, according to the state Department of Public Health.

By Friday, health officials have confirmed 171 cases in Chicago, up from 122 Thursday, and 105 in the Cook County, about 25 kilometers south of Chicago, up from 56, the rest cases were confirmed in several other counties in the state.

(Xinhua News Agency May 9, 2009)