Three different stool sample-processing methods (centrifugation, immunomagnetic separation, and selective enrichment cultivation) for the identification of Salmonella serogroups by PCR were studied. The corresponding sensitivities in an ethidium bromide stained-agarose gel were 10(5), 10(3), and 10 bacteria, respectively. The PCR assay with overnight enrichment performed as well as, or even bet...

Typing and in vitro cultivation of rotavirus-positive human stool samples stored unintentionally at ambient tropical temperatures for 2 1/2 months showed that rotavirus is stable and may still be infectious in vitro. This indicates that stool specimen collection for rotavirus studies can be performed in areas and settings where reliable cold storage is not available. The retained infectivity of...

The carrier rate of Clostridium difficile in an adult Swedish population was found to be 11 (1.9%) of 594. All isolates were toxigenic in vitro, but no healthy individual harbored free cytotoxin in stool. Of 398 patients with acute diarrhea not associated with antibiotic use, cytotoxin was found in stool filtrates of four (1%). In 4,793 patients with antibiotic-associated diarrhea from all part...

A cross-sectional study was performed in February 2001 to evaluate the prevalence and risk factors of Blastocystis hominis infection in army personnel who resided in an army base in Chonburi, Thailand. A total of 904 army personnel were enrolled in this study. Short-term in vitro cultivation was used to detect B. hominis in stool samples. In this population, B. hominis was the parasite most fre...

The aim of this study was to fortify the clinical importance and representation of toxigenic and non-toxigenic Clostridium difficile isolated from stool samples of hospitalized patients. This survey included 80 hospitalized patients with diarrhea and positive findings of Clostridium difficile in stool samples, and 100 hospitalized patients with formed stool as a control group. Bacteriological e...

Five cytopathic rotavirus strains were isolated in MA104 cells from stool specimens of kids with diarrhoea. Pre-treatment of the virus with trypsin and incorporation of low levels of trypsin in the maintenance medium were important for the successful cultivation of the strains in these cells. The isolates were shown to be group A rotaviruses by antigenic reactivity with a group A monoclonal ant...

shigellosis is an important public health problem, especially in developing countries. antibiotic treatment of bacterial dysentery, aimed at resolving diarrhea or reducing its duration is especially indicated whenever malnutrition is present. first-line drugs include ampicillin and trimethoprim sulfamethoxazole(tmp-smx); however multidrug-resistance has occurred and careful antibiotic selection...

Background: Blastocystis is the most common anaerobic protozoa living in the large intestine of a broad spectrum of vertebrates. Objectives: The aim of this study was to investigate the Blastocystis infection rate in inflammatory bowel disease (IBD) patients. Methods: A total of 80 stool samples were collected from IBD-proved patients. All stool samples were cultivated in Dulbecco’s modified Ea...