Distribution of GI and GII norovirus genotypes (capsid and polymerase combined) in Sub-Saharan Africa. (a) Relative frequencies of GI genotypes among a total of 42 GI norovirus positive samples from nine studies. GI.7 and GI.3 norovirus infections were more common than any other GI genotype. (b) Relative frequencies of GII genotypes among a total of 368 GII norovirus positive samples from nine studies. GII.4 (65.2%) was the most prevalent genotype. Und: undefined. Rest: GII.e, GII.8, GII.11, GII.13, GII.14, and GII.15.
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