[Natural and synanthropic foci of Echinococcus alveolaris infection (alveococcosis) in the northern areas of Kyrgyzstan].

The Republic of Kyrgyzstan, its northern area in particular, is referred to as one of the Echinococcus alveolaris infection endemic areas where the highest morbidity is registered. The synanthropic foci of Echinococcus alveolaris infection were first found in the At-Bashin District, Naryn Region. Twenty-three tracts in the Kara-Kuzhur ravine and 9 settlements in the Kochkor valley directly adjacent to the ravine were surveyed. Fifteen settlements and 4 tracts in the At-Bashin District, Narynsk Region, were also studied. The zoological studies revealed the natural foci of alveococcosis in the mid-mountainous areas of the Kara-Kuzhur ravine and the Kochkor valley just adjoining to the ravine. Hepatic alveococcal cysts were detected in the house mice caught in the settlements of the At-Bashin District, Naryn Region, which may suggest that in the areas of these settlements there may be synanthropic alveococcus areas where sheep flock and house (watch) dogs may be a final host. The retrospective analysis of morbidity indicated that among echinococcosis patients the proportion of those with alveococcosis increased from year to year (from 0.6% in 2002 to 15.6 within the first 6 months of 2006). A total of 1373 patients (females (57.2%) and males (42.8%)) were operated on at Bishkek surgical hospitals in the period of 2002 to the first half of 2006. Surgical treatment involved a palliative operation in most (55.2%) cases.