Although influenza-associated deaths are uncommon among children, an estimated annual average of 92 influenza-related deaths (0.4 deaths per 100,000 persons) occurred among children younger than five years of age during the 1990s (Fiore et al., 2009). As of March 23, 2013, the 2012-2013 flu season had seen 110 pediatric deaths, with 20 deaths in the 0 to 23 months old range (CDC, 2013f).