Intestinal protozoan infections and echinococcosis in the inhabitants of Dornod and Selenge, Mongolia (2003)

Abstract

The status of intestinal parasitic infections and seroprevalence of cystic echinococcosis in the inhabitants in Dornod and Selenge, Mongolia, was observed with stool and serum samples from 165 and 683 residents from August 9 to August 15, 2003. A total of 10 inhabitants (6.1%) were found to be infected with protozoan cysts or oocysts by stool examinations; 7, 1 and 2 cases with Entamoeba coli, Giardia lamblia and Cryptosporidium parvum, respectively. A total of 62 people (9.1%) revealed significantly high levels of specific antibodies against Echinococcus granulosus by enzyme-linked immunosorbent assay (ELISA). The surveyed areas are rural areas and the sanitized tab water is not available. There is a possibility of endemic transmission of water-borne protozoan diseases in these areas. The clinical echinococcosis is needed to be searched from the seropositive inhabitants.

Prevalence and risk factors associated with human cystic echinococcosis in rural areas, Mongolia

“…There were a few other community studies about CE prevalence in Mongolia [16,17]. The screening using ELISA method involved limited number of participants in some selected areas, such as Khovd and Bayan-Ulgii [18], Tuv near Ulaanbaatar [19], Dornod and Selenge [20]. The US screening survey wasn't available before.…”

“…The US screening survey wasn't available before. Prevalence rates given by those studies vary from lowest 2.1% in Dornod (4/187) to highest 11.7% (58/ 496) in Selenge province [20]. Previously, only Khovd and Bayan-Ulgii provinces were screened for echinococcosis.…”

The Overview of Epizootiologic Situation of Equids and Ruminants in Mongolia

“…In [2] notified, that 21.9% of 6465 slaughetred sheep were infected by Echinococcus spp. A total of 62 people (9.1%) revealed significantly high levels of specific antibiodies against Echinococcus granulosus by enzyme-linked immunosorbent assays (ELISA) [25]. In the study of [10] they reported, that from total 1707 serum samples were 9.2% (31 out of 338) goat, 3.6% (21 out of 590) of sheep and 5.9% (46 out of 779) cattle shown aimag.…”

“…Both test showed high compliance-the ELISA detected 24% infectious rate, seems to be more specific than the LAT detected 16.5% infectious rate in ovine samples. Cryptosporidiosis is a primary cause by oocysts of genus Cryptosporidium and diarrhoeal clinical features in humans are known in all over the world [47; 48] Two children were infected with Cryptosporidium parvum in Selenge aimag in Mongolia [25]. Some species of Cryptosporidium use a zoonotic transmission for human and animals [27].…”

Surveillance of cryptosporidium in some dairy farm

“…Байран маллагаатай аж ахуйн нялх тугалд үүрэн ПГУ-аар шинжлэхэд 50% халдварлалттай байв [11]. Сэлэнгэ аймагт явуулсан судалгаагаар 115 хүүхдийн баасны дээжид фермент холбоот эсрэгбиемийн урвал (ФХЭУ)-аар 1.7% (2/115) халдварлалтайг тус тус илрүүлжээ [12]. Мөн Бүгд Найрамдах Солонгос Улс (БНСУ)-ын Өвчний хяналт сэргийлэлтийн төв (ӨХСТ), Халдварт өвчин судлалын үндэсний төв (ХӨСҮТ)-ийн хамтарсан судалгаагаар цочмог суулгалт шинж тэмдэгтэй 138 хүний өтгөн(баас)ий дээж шинжлэхэд 7 (5.07%) криптоспоридийн халдвартай байв.…”