Five cases of E. coli infection appear to be linked to a restaurant in the Pittsburgh neighborhood of Oakland, according to Allegheny County health officials. Since the beginning of October, four people have been hospitalized and diagnosed with E .coli O157:H7. At least some are customers or employees of The Porch, located at 221 Schenley Dr. in Oakland. The restaurant voluntarily closed on Wednesday, Oct. 30, to allow health investigators to inspect the facilities. It plans to reopen on Thursday. The county health department is encouraging healthcare professionals in the area to test patients for E. coli if they exhibit symptoms such as diarrhea, nausea and abdominal cramps.