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Two more Valley schools will close for seven days after students were found to have swine flu, but health officials say all four known Arizona swine flu cases have been mild.
(Note: This article was updated at 3:40 p.m.)
The two schools are Tarwater Elementary and Hartford Sylvia Encinas Elementary schools, both in Chandler.
Health facilities have seen the biggest impact from the virus as fearful people swamp emergency rooms and doctors' off