BOSTON, Nov. 4 (UPI) --
From 1999 to 2002, 11 percent of adolescents with high-risk conditions received flu shots during all four seasons, U.S. researchers said.
Influenza vaccination has been recommended for adolescents with high-risk conditions -- asthma and other illnesses -- for well over a decade, lead author Mari Nakamura, a clinical fellow in pediatrics at Children's Hospital Boston said in a statement.