Fears about the severity of this year's influenza strain have depleted vaccine supplies around the country. Many clinics and doctors offices in the state have already run out of the vaccine. The Twin Cities campus of the University of Minnesota expects to exhaust its flu vaccine supply Friday. The Minnesota Department of Health today sponsored a round of flu shot clinics around the Twin Cities metropolitan area. Kris Ehrsmann is the section chief for immunization, tuberculosis and international health at the Health Department. She said today's clinics were busy, but vaccine is still available.