"CDC - Seasonal Influenza (Flu) - Q & A: The Nasal-Spray Flu Vaccine (Live Attenuated Influenza Vaccine [LAIV])." Centers for Disease Control and Prevention. Web. 20 June 2011. <http://www.cdc.gov/flu/about/qa/nasalspray.htm>.
Recommended Immunization Schedules for Persons Aged 0 through 18 Years are approved by the Advisory Committee on Immunization Practices (http://www.cdc.gov/vaccines/recs/acip), the American Academy of Pediatrics (http://www.aap.org), and the American Academy of Family Physicians (http://www.aafp.org). Department of Health and Human Services
Centers for Disease Control and Prevention (CDC), U.S. Department of Health and Human Services. Accessed June 20, 2011 from http://www.cdc.gov/mmwr/PDF/rr/rr5707.pdf