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. 2018 Jan 11;14(1):e1006780. doi: 10.1371/journal.ppat.1006780

Fig 2. The number of laboratory-confirmed influenza A (all strains) cases per week for each influenza season from 2007 to 2016 (red line, left axes) and the ten-year median (grey line, right axes).

Fig 2

The timing of ‘epidemic onset’ (vertical red, dashed line) for each year is shown.