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Oseltamivir-Resistant Influenza Viruses A (H1N1), Norway, 2007–08
Open accessAbstract
In Norway in January 2008, unprecedented levels of oseltamivir resistance were found in 12 of 16 influenza viruses A (H1N1) tested. To investigate the epidemiologic and clinical characteristics of these viruses, we used sequence analysis to test all available subtype H1N1 viruses from the 2007-08 season for resistance. Questionnaires from physicians provided information on predisposing diseases, oseltamivir use, symptoms, and complications. Clinical data were obtained for 265 patients. In total, 183 (67.3%) of 272 viruses were oseltamivir resistant. Resistance was not associated with prior use of antiviral drugs. Symptoms and hospitalization rates did not differ for patients infected with a resistant or a susceptible virus. Oseltamivir-resistant influenza viruses A (H1N1) did not show diminished capability to spread in the absence of selective pressure. The ability of these viruses to sustain their fitness and spread among persons should be considered when shaping future strategies for treating and preventing seasonal and pandemic influenza.
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Cited by
Pandemic Potential of a Strain of Influenza A (H1N1): Early Findings
Fraser, C., Donnelly, C. A., Cauchemez, S., Hanage, W. P., Van Kerkhove, M. D., Hollingsworth, T. D., Griffin, J., Baggaley, R. F., Jenkins, H. E., Lyons, E. J., et al. (2009) · Science · doi:10.1126/science.1176062 · Cited by 1,909
Harper, S. A., Bradley, J. S., Englund, J. A., File, T. M., Gravenstein, S., Hayden, F. G., McGeer, A. J., Neuzil, K. M., Pavia, A. T., Tapper, M. L., et al. (2009) · Clinical Infectious Diseases · doi:10.1086/598513 · Cited by 647
Infections With Oseltamivir-Resistant Influenza A(H1N1) Virus in the United States
Dharan, N. J. (2009) · JAMA · doi:10.1001/jama.2009.294 · Cited by 527
Global Transmission of Oseltamivir-Resistant Influenza
Moscona, A. (2009) · New England Journal of Medicine · doi:10.1056/nejmp0900648 · Cited by 469
The mechanism of resistance to favipiravir in influenza
Goldhill, D. H., te Velthuis, A. J. W., Fletcher, R. A., Langat, P., Zambon, M., Lackenby, A., & Barclay, W. S. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1811345115 · Cited by 298
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Metadata
- Authors
- Hauge, S. H., Dudman, S., Borgen, K., Lackenby, A., & Hungnes, O.
- Venue
- Emerging Infectious Diseases
- Published
- 2009-02
- Volume
- 15
- Issue
- 2
- Pages
- 155-162
- ISSN
- 1080-6040 (ISSN-L)
- 1080-6059
- OpenAlex
- W2155229144
- Cited by
- 233
- References
- 0
- FWCI
- 23.65
- Type
- journal article
- Language
- en
- Open access
- diamond
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- Hauge, S. H., Dudman, S., Borgen, K., Lackenby, A., & Hungnes, O. (2009). Oseltamivir-Resistant Influenza Viruses A (H1N1), Norway, 2007–08. Emerging Infectious Diseases. https://doi.org/10.3201/eid1502.081031
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