For the population over one year of age, oseltamivir phosphate can be used prophylactically for those at high risk, including those in close contact with individuals with known or suspected influenza infection (FDA, 2012). A double-blind placebo, controlled- treatment trial showed that when oseltamivir phosphate is given within 48 hours of symptoms of influenza, children one to 12 years of age are free from disease symptoms one and a half days sooner than those not treated (Roche Laboratories Inc., 2008).