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. 2020 Aug 16;6(2):veaa045. doi: 10.1093/ve/veaa045

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© The Author(s) 2020. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Identification of IBV lineages and clades that were in circulation in coastal Kenya in the 2016. (a) An ML phylogenetic tree based on the HA segment of samples we sequenced. From the surveillance, only unique HA sequences are included. The tree includes reference sequences of previously identified clades within B/Yamagata and B/Victoria lineages collected between 1987 and 2020. Kilifi sequences are shown with a red circle, the reference with a black filled circle. Strains included in the 2015–6 influenza vaccine are shown in a green filled circle for B/Victoria and blue filled circle for B/Yamagata. (b) The monthly prevalence of the B/Yamagata and B/Victoria lineage viruses across the 12 months the surveillance was undertaken. (c) The virus clades that were detected and their frequency across different months of the year 2016.