Figure 2. Distribution of selected studies, and mean percentage of positive samples for FLA per year.
The included studies were published between 1977 and 2021, and the distribution of studies by year and the average percentage value of positive samples per year are shown in Figure 2. FLA were detected in at least 1 sample of 98.59% (70/71) of selected studies (Table 1, Table S1).
Table 1. Description of included studies reporting the prevalence of live amoebae in swimming pools and recreational waters