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Fig. 3 | Virology Journal

Fig. 3

From: Epidemiological change of influenza virus in hospitalized children with acute respiratory tract infection during 2014−2022 in Hubei Province, China

Fig. 3

Dynamics of the positive rate of IFV before and after COVID-19 in Hubei Province from 2014 to 2021. a The positive rate of IFV among the overall children during three stages; b The positive rate of IFV among children with URTI during three stages; c The positive rate of IFV among children with LRTI during three stages. The blue line presents the positive rate of IFV during Stage I, the combined period during February–June of 2017–2019. The red line presents the positive rate of IFV during Stage II, the combined period during February–June of 2020. The yellow line presents the positive rate of IFV during State III, the combined period during February–June of 2021 and 2022. “*” was represented P < 0.05. COVID-19, coronavirus disease 2019

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Virology Journal

ISSN: 1743-422X