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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 1 – figure supplement 1. Intensity of weekly incidence of A. influenza A(H1N1) and B. influenza B in ten HHS regions, 1997 – 2019.

Figure 1 – figure supplement 1.

Incidences are the proportion of influenza-like illness (ILI) visits among all outpatient visits, multiplied by the proportion of respiratory samples testing positive for each influenza type/subtype. Seasonal and pandemic A(H1N1) are combined as A(H1N1), and the Victoria and Yamagata lineages of influenza B are combined as influenza B. White tiles indicate weeks when either influenza-like-illness cases or virological data were not reported. Data for Region 10 are not available in seasons prior to 2009.