Authors’ correction for Euro Surveill. 2018;23(5)

As requested by the authors of the article ‘Early season co-circulation of influenza A(H3N2) and B(Yamagata): interim estimates of 2017/18 vaccine effectiveness, Canada, January 2018’, published on 1 February 2018, a cell value was changed in Table 1, row label ‘Victoria lineage clade 1A’, column label ‘Overall %’, as it mistakenly stated ‘33%’ instead of ‘3%’. The mistake was corrected on 20 July 2018.