Occurrence of Cryptosporidium and Giardia and the Relationship between Protozoa and Water Quality Indicators in Swimming Pools
The Korean Journal of Parasitology
;
: 129-135, 2017.
Artículo
en Inglés
| WPRIM
| ID: wpr-50091
ABSTRACT
A total of 60 samples were collected from 35 swimming pools in Beijing, China, and the presence of Cryptosporidium and Giardia were investigated. The results showed that 16.7% and 15.0% of samples were positive for Cryptosporidium oocyst and Giardia cysts, respectively, with a mean concentration of 0.30 oocysts/10 L and 0.27 cysts/10 L. The oocysts and cysts were found to have higher rates of occurrence in August than in May. Genotyping confirmed the presence of Cryptosporidium hominis, C. parvum, and Giardia assemblages A and B, all of which were associated with human infections. The predominant species/assemblages were C. hominis and Giardia assemblage A. Analyses of the relationships between parasite oocysts/cysts, indicator bacteria, and physical-chemical parameters revealed that there was no correlation between 2 parasites and fecal bacterial indicators, whilst there was a significant correlation between protozoa and urea concentration, which indicates that urea concentration rather than fecal bacterial indicators might be an appropriate index for chlorine-resistant protozoa in swimming pools. This study provides useful information to improve the safety of swimming pool water and deduce the risk of protozoan infections.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Parásitos
/
Infecciones por Protozoos
/
Natación
/
Piscinas
/
Bacterias
/
Urea
/
Calidad del Agua
/
Agua
/
China
/
Cryptosporidium
Límite:
Humanos
País/Región como asunto:
Asia
Idioma:
Inglés
Revista:
The Korean Journal of Parasitology
Año:
2017
Tipo del documento:
Artículo
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