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(Left) Genotype diversity of HAstV (n = 5,990), NoV GI (n = 7,469), and NoV GII (n = 6,299) from WWTP effluents according to season between May 2013 and May 2014; (right) genotype diversity of HAstV (n = 15), NoV GI (n = 38), and NoV GII (n = 256) from clinical data collected throughout France according to season between May 2013 and May 2014. Each bar represents the diversity of one type of virus.
