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. 2022 Jun 19;23(12):6815. doi: 10.3390/ijms23126815

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© 2022 by the author.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Recommended influenza A(H1N1) virus vaccines for use in Northern Hemisphere influenza seasons (based on [26]). A(H1N1) strains: (a) A/Beijing/262/95-like virus; (b) A/New Caledonia/20/99-like virus; (c) A/Solomon Islands/3/2006-like virus; (d) A/Brisbane/59/2007-like virus. A(H1N1)pdm09 strains: (e) A/California/7/2009-like virus; (f) A/Michigan/45/2015-like virus; (g) A/Brisbane/02/2018-like virus; (h) A/Guangdong–Maonan/SWL1536/2019-like virus; (i) A/Victoria/2570/2019-like virus. Dotted line—linear forecast. Axis X: Northern Hemisphere influenza seasons.