Janeece Cook popped in to the county health clinic on Northwest 27th Street in Corvallis Friday morning for a checkup. She wasn't sick, and it wasn't time for her annual physical, but she was a little worried she might have been exposed to the flu. The doctor checked Cook's pulse and blood pressure, listened to her breathing, asked some questions about her overall health and arranged for her to get a flu shot. But the clinic won't be sending Cook a bill for the office visit — it's already covered.