Fig. 5From: Pooled prevalence and genetic diversity of norovirus in Africa: a systematic review and meta-analysisFunnel plot symmetry to check the presence or absence of publication bias: left The pooled prevalence of NoVs in Africa from studies reporting between 2015 to 2021; right Egger’s publication bias plot. Each dot represents individual studies. The x-axis represents precision (reciprocal of the standard error of the estimate). The y-axis represents log transformed standardized effect (estimate divided by its standard error)Back to article page