Two schools in San Francisco Bay Area are being closed for a week starting from Wednesday after suspected swine flu cases were found.

A student at Branham High School in San Jose, Santa Clara County, was tested probable for swine flu, prompting officials to close the school until May 5, the San Jose Mercury News reported.

"All activities on and off campus have been canceled," Branham High School said in a brief statement posted on its website, noting that the school is being closed following the guidance from the Center for Disease Control and Prevention.

Highlands Elementary School in Pittsburg, Contra Costa County, was also closed Wednesday after three students were tested positive as having probable swine flu.

In a statement, Highlands Elementary School said 13 students from one of the school's fourth grade class reported flu symptoms on Tuesday. Tests on all the affected students showed that three of the samples were "probable positive" to swine flu.

As swine flu spread to at least 10 US states as of Wednesday, the authorities are recommending schools to be closed temporarily as a precaution.

Schools with confirmed or suspected cases of swine flu "should strongly consider temporarily closing so that we can be as safe as possible," US President Barack Obama said Wednesday at the White House.

(Xinhua News Agency April 30, 2009)