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Soil is considered the primary source of  Toxocara  transmission to humans, especially children. The status of soil contamination with  Toxocara  eggs in southern Thailand is unknown. This study aimed at estimating the soil contamination with  Toxocara  eggs in public schools in Nakhon Si Thammarat province in southern Thailand. Soil samples were collected from 12 public schools between August and September 2017. At each site, ten soil samples were collected from the following five types of locations: (1) playgrounds, (2) football fields, (3) sidewalks, (4) schoolyards, and (5) areas around cafeterias. In total, 120 samples were examined for  Toxocara  eggs with a modified flotation method using a sucrose solution.  Toxocara  eggs were detected in 8 (66.7%) of the 12 studied public schools. Of the 120 soil samples, 22 (18.3%; 95% CI: 11.9, 26.4) were contaminated with  Toxocara  eggs. The highest levels of  Toxocara  egg contamination were observed in playgrounds (41.7%; 95% CI: 22.1, 63.4), followed by football fields (20.8%; 95% CI: 7.1, 42.2), sidewalks (12.5%; 95% CI: 2.7, 32.4), and schoolyards (12.5%; 95% CI: 2.7, 32.4). There were significant differences in the distribution of  Toxocara  eggs across location types ( p  < 0.05). The findings demonstrated that the soil samples from public schools were contaminated with  Toxocara  eggs. Playgrounds were the most heavily contaminated locations. Teaching children proper handwashing steps and discouraging geophagia should be implemented to reduce the distribution of  Toxocara  and limit future  Toxocara  infections.

Soil Contamination with Toxocara Eggs in Public Schools in Rural Areas of Southern Thailand