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. 2022 Oct 17;21(3):195–210. doi: 10.1038/s41579-022-00807-9

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Fig. 1 — a | Prevalence of influenza A virus A and influenza B virus (2019–2022). b | Prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and other respiratory viruses. Included are respiratory specimens from 2018 epidemiological week 47 to 2022 epidemiological week 30; a total of 154,740 specimens were tested: 957 in 2018, 25,019 in 2019, 64,869 in 2020, 48,458 in 2021 and 15,437 in 2022. Respiratory specimens were tested with use of a custom-arrayed reverse transcription–PCR platform (Thermo Fisher)¹⁶. Adapted with permission from ref.¹⁶, Seattle Flu alliance.