@article {1631,
	title = {First case in Italy of acquired resistance to oseltamivir in an immunocompromised patient with influenza A/H1N1v infection.},
	journal = {J Clin Virol},
	volume = {48},
	year = {2010},
	month = {2010 Jul},
	pages = {220-2},
	abstract = {<p>A pandemic influenza A/H1N1v strain with the neuraminidase H274Y mutation was detected in nasal secretions of a 2-year-old leukemic patient with influenza-like illness after 18 days of treatment with oseltamivir. At baseline, no drug-resistant virus was found, while 4 days after treatment initiation a mixture of wild-type and mutated virus was detected. After treatment interruption, the wild type influenza virus re-emerged and became prevalent in nasal secretions after a few days, suggesting the lower fitness of the mutated virus strain. The patient slowly improved concurrently with a decrease in virus load, which resulted negative 42 days after diagnosis. No other drug-resistant influenza A/H1N1v virus strains have been detected in Italy (up to the end of November 2009) since the first case of the novel A/H1N1v virus was identified in the country (May 2009).</p>},
	keywords = {Amino Acid Substitution, Antiviral Agents, Bodily Secretions, Child, Preschool, Drug Resistance, Viral, Female, Humans, Immunocompromised Host, Influenza A Virus, H1N1 Subtype, Influenza, Human, Italy, Molecular Sequence Data, Mutation, Missense, Neuraminidase, Nose, Oseltamivir, RNA, Viral, Sequence Analysis, DNA, Treatment Outcome, Viral Load, Viral Proteins, Withholding Treatment},
	issn = {1873-5967},
	doi = {10.1016/j.jcv.2010.03.027},
	author = {Campanini, Giulia and Piralla, Antonio and Rovida, Francesca and Puzelli, Simona and Facchini, Marzia and Locatelli, Franco and Minoli, Lorenzo and Percivalle, Elena and Donatelli, Isabella and Baldanti, Fausto}
}
