Cryptosporidium Contamination and Attributed Risks in Yunlong Lake in Xuzhou, China

Autor: Yadong Kong, Ping Lu, Tao Yuan, Jinghui Niu, Zhaoji Li, Baisong Yang
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Canadian Journal of Infectious Diseases and Medical Microbiology, Vol 2017 (2017)
Druh dokumentu: article
ISSN: 1712-9532
1918-1493
01416871
DOI: 10.1155/2017/4819594
Popis: Swimming in surface water bodies (e.g., lakes, rivers) can expose the human body to substantial risk of infection by Cryptosporidium. These findings are from a one-year investigation on the occurrence and distribution of the protozoan parasite Cryptosporidium in Yunlong Lake, Xuzhou, China. Cryptosporidium oocysts were detected by immunofluorescence microscopy. From January to November of 2015, 180 samples (120 water samples and 60 sediment samples) were collected and analyzed. Among them, 42 (35%) water samples and 28 (47%) sediment samples tested positive for Cryptosporidium. The concentration of Cryptosporidium oocysts in the water samples was 0–8/10 L and 0–260/g in sediment samples. Results revealed that July was the highest risk period for both swimming and diving with an estimated probability of infection from swimming of greater than 18 per 10,000 swim sessions. It was concluded that swimming or diving in Yunlong Lake has a higher risk of Cryptosporidium infection than the acceptable risk level set by the United States Environmental Protection Agency. Thus, regular monitoring of water quality in recreation water bodies is strongly recommended.
Databáze: Directory of Open Access Journals
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