The sensitivity and specificity of 3 diagnosis kits for typhoid fever – Kit PanBio (American), Kit Typhi Dot (IgM, IgG) (Malaysia) and Kit Tubex (Sweden) were determined on 434patients with fever, examined at Cai Lay District Hospital – Tien Giang province from Oct 2001 to March 2002. The results were compared with Widal test. Results showed a same convenience in all three kits. The Kit Tubex particularly has a high cost but rapid results. The Kits Typhi Dot and Tubex gave high sensitivity and specificity with a reliance enough in rapid diagnosis of typhoid fever. Widal test is less sensitive and difficult to read the result, however it is the most common test in laboratory
Typhoid Fever ; Serologic Tests ; Diseases ; diagnosis

From July 2001 to Jan 2002, in 5 various locations along the Set River and KimNguu River in ThanhTri rural district in Hanoi, 120 samples of vegetable irrigated with waste water from these rivers were studied on. The 3,33% of samples had got positive reaction to Asc mousearis egg ;36,7% to Cryptosporidium and 45% to Cyclospora
Parasites ; Intestinal Diseases ; Vegetables

From Aug 2001 to July 2002 at St Paul Hospital in Hanoi, 300 fecal samples collected from 300 diarrhoea children aged from 3 months to 5 years old were studied. Results showed that in 51,9% of cases, rotavirus was the leading cause, Escherichia coli was the second, among which addhesive strains and invasive strains of coli were the most common. In first time, toxic gene was detected in the group of intestinal hemorrhagic Escherichia coli. Shigella and Campillobacter were still the common pathologic causes of pediatric diarrhoae
Diarrhea/etiology ; Child ; Epidemiology

An investigation of 5 sites along with the Kim nguu and Set rivers and 5 sites along with Red river in Gia lam district has shown that the worm eggs found in 4 samples of vegetables among 120 samples of vegetables in Thanh tri district while no worm eggs found in samples of vegetables in Gia lam district. The rates of cryptosridium and cyclospores in Thanh tri were 3 times higher than this in Gia lam.
Enterosite ; Wastewate ; Agriculture

Background: Helicobacter pylori infection is difficult to diagnose in children, especially in developing countries where non - invasive methods such as urea - breath test are often not available. Objectives: To evaluate the sensitivity and specificity of a new monoclonal antibody - based antigen - in - stool enzyme immunoassay (Premier Platinum HpSA PLUS) for diagnosis of H. pylori infection in Vietnamese children. Subjects and method: Sensitivity of the antigen - in - stool test was evaluated in 232 children, 3 - 15 years of age, who were positive for H. pylori infection by culture from biopsies. For evaluation of the specificity 241 children of similar age with non - gastrointestinal conditions were included with blood and stool samples. Results:Among the culture - positive children, 224 were also positive by Premier Platinum HpSA PLUS. Among the control children 98 had negative for H. pylori infection as established by serology, using two ELiSAs (in house and Pyloriset EIA - Gill) and an immunblot (Helicoblot 2.1). These 93 childrenhad H. pylori negative also in the stool test. The sensitivity, specificity, and positive and negative predictive values of Premier Platinum HpSA PLUS were thus found to be 96.6%, 94.9%, 97.8%, and 92.1 %, respectively. Conclusion: The outcome have demonstrated Premium Platinum HpSA PLUS to be a reliable method for detection of H. pylori infection in Vietnamese children.
Helicobacter pylori/ pathogenicity ; Child