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[Preprint]. 2024 May 22:2023.10.02.23296453. Originally published 2023 Oct 3. [Version 2] doi: 10.1101/2023.10.02.23296453

Figure 4 – figure supplement 1. Regional patterns of influenza type and subtype circulation during seasons 1997–1998 to 2018–2019.

Figure 4 – figure supplement 1.

Pie charts represent the proportion of influenza positive samples that were typed as A(H3N2), A(H1N1) or A(H1N1)pdm09, and B in each HHS region. Data for Region 10 (purple) are not available for seasons prior to 2009.