(Salem, OR)  --  Health officials say they expect an increase in the number of E. coli cases linked to Chipotle restaurants in Washington and Oregon.  As of Friday, 19 cases of E. coli infection had been confirmed in western Washington and three in northwest Oregon, with some of those patients having eaten at Chipotle locations.  About one-third of those have been hospitalized, but there have been no deaths from the infections.  All 43 Chipotle locations in Oregon and Washington will remain closed until health officials say it's safe for them to reopen.