Sapovirus genotypes reported in surveillance studies lasting at least one year and using RT-PCR for sapovirus detection in diarrheic stools in the last decade.
In these studies, genotypes were assigned according to phylogenetic analysis of partial capsid gene, with some exceptions that used near full genomes. ArcGis 10.7 was used to display sapovirus distribution by country and study. The basic map was provided by OpenStreetMap.