Nurse Debbie Smerk (right) administers a flu shot to Pamela Black at MetroHealth in Cleveland on Thursday, Jan. 10, 2013. (AP Photo/Tony Dejak)

Photo by: Tony Dejak

Nurse Debbie Smerk (right) administers a flu shot to Pamela Black at MetroHealth in Cleveland on Thursday, Jan. 10, 2013. (AP Photo/Tony Dejak)