Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Pools of sera used as study standards: vaccine virus strains.
| Pool | Year | H1N1 | H3N2 | B/Victoria | B/Yamagata |
|---|---|---|---|---|---|
| GhPool1 | 2017-18 (NH) | A/Michigan/45/2015 | A/Hong Kong/4801/2014 | B/Brisbane/60/2008 | B/Phuket/3073/2013 |
| GhPool2 | 2017-18 (NH) | A/Michigan/45/2015 | A/Hong Kong/4801/2014 | B/Brisbane/60/2008 | B/Phuket/3073/2013 |
| Pool 3b | 2015-16 (NH) | A/California/07/2009 | A/South Australia/55/2014 (A/Switzerland/9715293/2013-like) | N/A | B/Phuket/3073/2013 |
NH, Northern hemisphere.
