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Free-living ameba contamination in natural hot springs in Thailand.

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Department of Protozoology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.


Thermo tolerant free-living ameba, Naegleria spp and Acanthamoeba spp contamination in natural hot springs in Thailand were carried out from 13 provinces. The temperature of hot springs water varied from 28 degrees-65 degrees C and pH from 6-8. We found that 38.2 % (26/68) of water samples were positive, Acanthamoeba was 13.2% (9/68) whilst Naegleria was 35.3% (24/68). Contamination by free-living ameba in natural hot springs may pose a significant health risk to people who use such water for recreation activities.

[Indexed for MEDLINE]

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