Monitoring of Noxious Protozoa for Management of Natural Water Resources
10.3347/kjp.2018.56.2.205
- Author:
Young Yil BAHK
1
;
Pyo Yun CHO
;
Sung Kyu AHN
;
Sangjung PARK
;
Won Hwa JHEONG
;
Yun Kyu PARK
;
Ho Joon SHIN
;
Sang Seob LEE
;
Okjae RHEE
;
Tong Soo KIM
Author Information
1. Department of Biotechnology, College of Biomedical and Health Sciences, Konkuk University, Chungju 27478, Korea.
- Publication Type:Brief Communication
- Keywords:
Cryptosporidium parvum;
Giardia lamblia;
Naegleria fowleri;
noxious protozoa;
catchment scale investigation
- MeSH:
Cryptosporidium;
Cryptosporidium parvum;
Diarrhea;
Drinking;
Drinking Water;
Gastroenteritis;
Giardia;
Giardia lamblia;
Lakes;
Naegleria fowleri;
Oocysts;
Prevalence;
Recreation;
Rivers;
Swimming Pools;
Water Resources;
Water
- From:The Korean Journal of Parasitology
2018;56(2):205-210
- CountryRepublic of Korea
- Language:English
-
Abstract:
Waterborne parasitic protozoa, particularly Giardia lamblia and Cryptosporidium spp., are common causes of diarrhea and gastroenteritis worldwide. The most frequently identified source of infestation is water, and exposure involves either drinking water or recreation in swimming pools or natural bodies of water. In practice, studies on Cryptosporidium oocysts and Giardia cysts in surface water are challenging owing to the low concentrations of these microorganisms because of dilution. In this study, a 3-year monitoring of Cryptosporidium parvum, Giardia lamblia, and Naegleria fowleri was conducted from August 2014 to June 2016 at 5 surface water sites including 2 lakes, 1 river, and 2 water intake plants. A total of 50 water samples of 40 L were examined. Cryptosporidium oocysts were detected in 22% of samples and Giardia cysts in 32%. Water at the 5 sampling sites was all contaminated with Cryptosporidium oocysts (0–36/L), Giardia cysts (0–39/L), or both. The geometric mean concentrations of Cryptosporidium and Giardia were 1.14 oocysts/L and 4.62 cysts/L, respectively. Thus, effective monitoring plans must take into account the spatial and temporal parameters of contamination because they affect the prevalence and distribution of these protozoan cysts in local water resources.
