Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 16, Number 1—January 2010
Letter

Oseltamivir- and Amantadine-Resistant Influenza Virus A (H1N1)

Peter K.C. Cheng, Amanda P.C. To, Tommy W.C. Leung, Peter C.K. Leung, Connie W.C. Lee, and Wilina W.L. LimComments to Author 
Author affiliations: Department of Health, Hong Kong, People’s Republic of China

Main Article

Table

Prevalence of oseltamivir-resistant and amantadine- and oseltamivir-resistant influenza A virus (H1N1) detected in Hong Kong, with clade designations, July 2008–June 2009

Date detected No. isolates tested No. (%) isolates oseltamivir resistant No. (%) isolates oseltamivir and amantadine resistant Predominating influenza A virus (H1N1) clade, no. identified/total no. sequenced (%)
2008 Jul 462 78 (16.9) 4 (5.1) Clade 2C, 104/182 (57.1)
2008 Aug 313 45 (14.4) 1 (2.2) Clade 2C, 51/95 (53.7)
2008 Sep 61 21 (34.4) 1 (4.8) Clade 2B, 20/39 (51.3)
2008 Oct 19 13 (68.4) 0 Clade 2B, 13/16 (81.3)
2008 Nov 16 15 (93.8) 0 Clade 2B, 16/16 (100)
2008 Dec 45 44 (97.8) 0 Clade 2B, 41/41 (100)
2009 Jan 327 313 (95.7) 0 Clade 2B, 90/104 (86.5)
2009 Feb 769 755 (98.2) 0 Clade 2B, 138/153 (90.2)
2009 Mar 279 279 (100) 0 Clade 2B, 61/61 (100)
2009 Apr 63 63 (100) 2 (3.2) Clade 2B, 18/18 (100)
2009 May 22 22 (100) 2 (9.1) Clade 2B, 7/7 (100)
2009 Jun 77 77 (100) 46 (59.7) Clade 2B, 55/55 (100)

Main Article

Page created: March 31, 2011
Page updated: March 31, 2011
Page reviewed: March 31, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
file_external