Volume 11, Number 8—August 2005
Research
Influenza A (H3N2) Outbreak, Nepal
Luke T. Daum*†
, Michael W. Shaw‡, Alexander I. Klimov‡, Linda C. Canas*, Elizabeth A. Macias*, Debra Niemeyer*, James P. Chambers†, Robert Renthal†, Sanjaya K. Shrestha§, Ramesh P. Acharya¶, Shankar P. Huzdar¶, Nirmal Rimal¶, Khin S. Myint#, and Philip Gould*
, Michael W. Shaw‡, Alexander I. Klimov‡, Linda C. Canas*, Elizabeth A. Macias*, Debra Niemeyer*, James P. Chambers†, Robert Renthal†, Sanjaya K. Shrestha§, Ramesh P. Acharya¶, Shankar P. Huzdar¶, Nirmal Rimal¶, Khin S. Myint#, and Philip Gould*Table 1
Hemagglutination inhibition (HI) reciprocal titers of influenza A (H3N2) viruses with ferret antisera*
| Strain designation | Reference ferret antisera |
||||||
|---|---|---|---|---|---|---|---|
| PAN/2007 | KO/770 | WY/03 | TX/40 | OK/8 | WEL/01 | Date collected | |
| Reference antigens | |||||||
| A/Panama/2007/99 | 2,560 | 160 | 640 | 320 | 640 | 160 | 7/12/99 |
| A/Korea/770/2002† | 80 | 640 | 1,280 | 640 | 640 | 320 | 12/2/02 |
| A/WyomingG/03/2003 | 640 | 320 | 1,280 | 1,280 | 1,280 | 320 | 2/13/03 |
| A/Texas/40/2003 | 640 | 1,280 | 1,280 | 2,560 | 1,280 | 640 | 10/2/03 |
| A/Oklahoma/8/2004 | 160 | 1,280 | 1,280 | 2,560 | 1,280 | 640 | 12/8/03 |
| A/Wellington/1/2004 | 160 | 320 | 320 | 640 | 320 | 640 | 1/26/04 |
| Test antigens | |||||||
| A/Nepal/1679/04 | 40 | 160 | 1,280 | 640 | 2,560 | 320 | 7/2/04 |
| A/Nepal/1685/04 | 40 | 320 | 1,280 | 640 | 2,560 | 320 | 7/2/04 |
| A/Nepal/1670/04 | 10 | 160 | 1,280 | 320 | 1,280 | 320 | 7/2/04 |
| A/Nepal/1659/04 | 10 | 320 | 640 | 320 | 1,280 | 160 | 7/2/04 |
| A/Nepal/1660/04 | 10 | 160 | 640 | 320 | 2,560 | 160 | 7/2/04 |
| A/Nepal/1680/04 | 20 | 320 | 320 | 320 | 1,280 | 160 | 7/2/04 |
| A/Nepal/1672/04 | 10 | 160 | 320 | 160 | 1,280 | 160 | 7/2/04 |
| A/Nepal/1678/04 | 40 | 160 | 320 | 160 | 1,280 | 160 | 7/2/04 |
| A/Nepal/1694/04 | 10 | 160 | 320 | 160 | 2,560 | 160 | 7/3/04 |
*Test antigens are considered antigenically different from the reference strain if HI titers show a 4-fold difference.
†A/Korea/770/2002 is antigenically equivalent to the A/Fujian/411/02 vaccine strain.
