Federal regulators Thursday said they have confirmed the presence of a fungus in an unopened vial of steroids from the troubled Framingham pharmacy at the center of a nationwide meningitis outbreak that matches the type of infection found in most of the sick patients. A release posted on the US Food and Drug Administration website said regulators found fungus known as Exserohilum rostratum in an unopened vial of methylprednisolone acetate from one of the three implicated lots that were shipped by New England Compounding Center to 23 states.
