1. Suzuki, H. et al. Emergence of amantadine-resistant influenza A viruses: epidemiological study. J. Infect. Chemother. 9, 195–200 (2003).
2. Centers for Disease, C. and Prevention. Update: drug susceptibility of swine-origin influenza A (H1N1) viruses, April 2009. MMWR Morb. Mortal. Wkly Rep. 58, 433–5 (2009).
3. Novel Swine-Origin Influenza, A.V.I.T. et al. Emergence of a novel swine-origin influenza A (H1N1) virus in humans. N. Engl. J. Med. 360, 2605–15 (2009).
4. Fiore, A. E. et al. Antiviral agents for the treatment and chemoprophylaxis of influenza — recommendations of the Advisory Committee on Immunization Practices (ACIP). MMWR Recomm. Rep. 60, 1–24 (2011).
5. Kiso, M. et al. Resistant influenza A viruses in children treated with oseltamivir: descriptive study. The Lancet. 364, 759–765 (2004).