Practical aspects of laboratory diagnosis of enterobiasis.
In the structure of the incidence of parasitic invasions in the Russian Federation, enterobiosis - contact parasitosis is the dominant helminthiasis. According to the state report, the predominantly childish population of the country suffers from enterobiasis. So, the share of children under 17 years old in the structure of patients with enterobiasis in 2017 was 97.5% . In recent years, there has been no steady positive incidence of this helminthiasis, so in 2014 the incidence of enterobiosis in the population was 148.72 per 100 thousand of the population, and in 2017 this figure increased to 154.7 per 100 thousand of the population. According to the analysis of the medical records of patients of the clinic of infectious and parasitic diseases, the percentage of adults among patients with enterobiasis in the last 5 years amounted to 20.9%. This fact is explained by the decrease in the number of surveys and the selection of ineffective methods for diagnosing this parasitosis among the adult population of the Russian Federation. One of the most important non-specific laboratory signs of parasitic invasion is the leukemoid reaction of the eosinophilic type. Among patients referred to the clinic for the purpose of eliminating parasitic diseases, the proportion of patients with eosinophilia was 35.8%. The diagnosis of parasitic invasion was made in 25.0% of patients, the rest suffered from various allergic diseases, neoplasms, pathology of the gastrointestinal tract, etc. The structure of parasitic diseases was represented mainly by 13 nosological forms. Enterobiasis was most frequently recorded (43.8%), the proportion of larvaceous helminth infections (echinococcosis, ostocarosis, dirofilariasis) was 19.5%, other gastrointestinal worms (teniarinhoz, diphyllobotriosis, opisthorchiasis, strongyloidosis) - 22.8%. 6.3% of patients had a combined invasion of two or more parasites. The clinic annually registers up to 7.6% of cases of rare imported parasitosis (loaosis, leishmaniasis, cutaneous larva migrans, etc.).