Publications

incidence and risk factors of giardia duodenalis infection in an orphanage, thailand.	a cohort study was performed to evaluate the incidence and risk factors of giardia duodenalis infection in an orphanage in suburban area outside bangkok, central thailand. stool specimens were examined for the presence of g. duodenalis in january 2007, may 2007 and january 2008. of 892 stool specimens from 481 individuals, simple wet preparation, pbs ethyl-acetate sedimentation and pcr amplification of the ssu-rrna gene were performed to detect g. duodenalis. using pcr of the glutamate dehydroge ...	2014	25382480
quantification of diarrhea risk related to wastewater contact in thailand.	wastewater reuse contributes to closing the nutrient recycling loop as a sustainable way of managing water resources. bangkok has over a thousand man-made drainage and irrigation canals for such purposes. its use for agricultural and recreational purposes has a long tradition in rural and peri-urban areas. however, the continuation of these practices is increasingly questioned since potential health risks are an issue if such practices are not appropriately managed. the microbial and chemical qu ...	2012	22311100
giardia intestinalis in thailand: identification of genotypes.	this study was undertaken to determine the genetic diversities of giardia intestinalis isolated in thailand. g. intestinalis cysts were collected from stool samples of 61 subjects residing in bangkok or in rural communities of thailand with and without gastrointestinal symptoms. all the cyst samples gave positive tpi amplicons (100% sensitivity), either of the 148- or the 81-bp tpi segments. cyst assemblage identification of the 148- and 81-bp tpi gene segments by polymerase chain reaction showe ...	2010	20214085
transmission cycles of giardia duodenalis in dogs and humans in temple communities in bangkok--a critical evaluation of its prevalence using three diagnostic tests in the field in the absence of a gold standard.	the prevalence and associated risk factors for giardia duodenalis in canine and human populations in temple communities of bangkok, thailand were determined by evaluating three common diagnostic methods utilised to detect giardia, namely zinc sulphate flotation and microscopy, an immunofluoresence antibody test and nested polymerase chain reaction (pcr) based on the ssu-rdna gene. the diagnostic sensitivity and specificity together with the negative and positive predictive values of each test we ...	2009	19524080
prevalence of blastocystis hominis infection in asymptomatic individuals from bangkok, thailand.	fresh stool examination was performed from 2,230 participants who enrolled in annual check-up programs of the faculty of medical technology, mahidol university in 1999-2000 and 2004. in this study, blastocystis hominis infection was diagnosed by culturing in jones' media. a total of 21% of fecal specimens (in 1999-2000) and 13.7% (in 2004) were positive for b. hominis. the vacuolated form was the predominant form found in culture solution after 48 hours of incubation. the distribution of infecti ...	2005	16438173
protozoan enteric infection in aids related diarrhea in thailand.	the aim of this study was to determine the prevalence of enteric protozoa and other pathogens in aids patients with diarrhea in bangkok, thailand. of 288 consecutive patients screened in the 10 month period between november 1999-august 2000 inclusive, 55 (19.2%) had cryptosporidium spp, 13 (4.5%) had isospora oocyst, 11 (3.8%) had giardia lamblia, 3 (0.9%) had entamoeba histolytica, and 1 (0.3%) had iodamoeba butschlii infection. the prevalence of microsporidia was 11% in this study. of 251 pati ...	2001	12041580
intestinal parasites in pediatric patients with diarrhoeal diseases in bangkok.	stool examinations of 147 pediatric patients with diarrhoeal disease were carried out at siriraj hospital, bangkok by using the direct-smear technique. stool of 27 patients (18.4%) were positive for intestinal parasites. children under one year of age were free of intestinal helminths and protozoa. parasites were equally prevalent in males and females and without any age group predilection. the prevalence of intestinal parasites were entamoeba histolytica 6.8%, giardia lamblia 6.1%, others were ...	1984	6523173
endemic cryptosporidium and giardia lamblia infections in a thai orphanage.	we conducted a point prevalence survey for enteric protozoa in 205 institutionalized orphans 1-61 months of age in bangkok, thailand. cryptosporidium was identified in 17 children (8%), giardia lamblia in 42 (20%), and 3 children (1%) had both parasites. at the time of diagnosis, diarrheal symptoms were present in a minority of subjects: 36% of children with cryptosporidium alone, 10% with g. lamblia alone, and in 20% of those with neither parasite. although chronic nutritional status (height/ag ...	1990	2221219