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Prevalence and Risk Factors for Blastocystis Infection Among Children and Caregivers in a Child Care Center, Bangkok, Thailand

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  • Department of Medical Technology and Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand; Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand; Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand

In September 2009, a cross-sectional study was conducted to evaluate parasitic infections in a child care center in Khlong Toei, Bangkok, Thailand. Of 503 children and staff members, 258 (51.3%) stool samples and questionnaires were obtained. The most common parasitic infection was Blastocystis sp. (13.6%). Blastocystis sp. subtype 3 was predominantly found (80.0%), followed by subtypes 2 (12.0%) and 1 (8.0%). The prevalence of Blastocystis infection varied among different age groups. The prevalence of Blastocystis infection in non-HIV-infected children aged < 10 and 10–19 years were 14.5% and 10.3%, respectively, which were not significantly different. All 31 HIV-infected children were not infected with Blastocystis sp. The most likely reason could be the result of properly using prevention measures for this specific group.

Author Notes

* Address correspondence to Ram Rangsin, Department of Military and Community Medicine, Phramongkutklao College of Medicine, 315 Rachawithi Rd., Ratchathewi, Bangkok 10400, Thailand. E-mails: rrangsin@pcm.ac.th or r_rangsin@yahoo.com

Financial support: This study was financially supported by research grants from Thammasat University, Phramongkutklao College of Medicine Research Fund, and the National Science and Technology Development Agency (NSTDA) in Thailand.

Authors' addresses: Duangnate Pipatsatitpong, Department of Medical Technology, Faculty of Allied Health Science, Thammasat University, Pathum Thani, Thailand, E-mail: duangnate_pipat@hotmail.com. Ram Rangsin, Department of Military and Community Medicine, Phramongkutklao College of Medicine, Ratchathewi, Bangkok, Thailand, E-mail: rrangsin@pcm.ac.th. Saovanee Leelayoova, Mathirut Mungthin, and Tawee Naaglor, Department of Parasitology, Phramongkutklao College of Medicine, Ratchathewi, Bangkok, Thailand, E-mails: s_leelayoova@scientist.com, mathirut@hotmail.com, and tawee_narkloar@hotmail.com. Ratchaneewan Aunpad, Graduate Program in Biomedical Sciences, Thammasat University, Pathum Thani, Thailand, E-mail: aunpad@yahoo.com.

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