Characteristics of Patients with Oseltamivir-Resistant Pandemic (H1N1) 2009, United States
Published Date:Feb 2011
Source:Emerg Infect Dis. 17(2):255-257.
Aged, 80 And Over
Drug Resistance, Viral
Influenza A Virus, H1N1 Subtype
Pandemic (H1N1) 2009
Description:During April 2009-June 2010, thirty-seven (0.5%) of 6,740 pandemic (H1N1) 2009 viruses submitted to a US surveillance system were oseltamivir resistant. Most patients with oseltamivir-resistant infections were severely immunocompromised (76%) and had received oseltamivir before specimen collection (89%). No evidence was found for community circulation of resistant viruses; only 4 (unlinked) patients had no oseltamivir exposure.
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