The incidence of hepatitis C virus infection in Russia is 2–3 %. In our country the socio-economic damage caused by the increase in the incidence of chronic hepatitis and its consequences, such as liver cirrhosis and hepatocarcinoma, is enormous. The goal of antiviral therapy for chronic hepatitis C is a sustained virological response, which is associated with a biochemical response and regression of hepatic tissue fibrosis, which leads to a decrease in the liver cirrhosis development. The purpose of the study is to determine the efficacy of interferon-free therapy; to compare the efficacy of non-invasive methods for liver fibrosis diagnostics in chronic hepatitis C. Materials and Methods. The study included 63 patients who underwent direct antiviral therapy (dasabuvir and ombitasvir + paritaprevir + ritonavir (3D-therapy)) in combination with ribavirin or without it, depending on the hepatitis C virus genotype and the stage of liver fibrosis. The stage of hepatic tissue fibrosis was assessed by non-invasive methods, namely, elastography and vibration-controlled transient elastometry using FibriScanCompact 530 (Echosens, France). Liver fibrosis biomarkers (AAR, APRI, Fib-4, Forns index) were calculated; MDA test was conducted. Results. 100 % efficacy of dasabuvir and ombitasvir + paritaprevir + ritonavir was confirmed for both 8- and 12-week therapy in comorbid patients with extrahepatic manifestations, patients who underwent interferon-based therapy, regardless of liver fibrosis stage and disease duration. The article provides a comparative description of non-invasive methods for assessing liver fibrosis in patients with chronic hepatitis C: elastography, elastometry and serum fibrosis indices (APRI, AAR, FIB-4, MDA, Forns index). Indirect fibrosis markers are useful, because they allow to determine the late stages of liver fibrosis (F3-F4 on the METAVIR scale) with a very high degree of confidence.

The authors report clinical and laboratory data concerning a case of hemorrhagic dengue fever introduced to Ul’yanovsk by a tourist who had spent holiday in Vietnam. The clinical picture of the disease is described along with results of clinical and laboratory analyses. The approaches to the evaluation of the patient's health status during the period ofprimary examination and medical care as well as the problems that arose after the final diagnosis was established are discussed.

All over the world hepatitis C is a global medical and social health problem, along with HIV infection, tuberculosis, hepatitis B, etc. According to the latest WHO estimates, the overall number of patients with chronic hepatitis C (CHC) in 2015 amounted to 71 million people (1 % of the world’s population). In Russia there are 5 million such patients. The largest number of people registered with CHC diagnosed in the Russian Federation is registered and lives in the Volga Federal District – 23.3 % (143,477 people). The incidence in the city of Ulyanovsk is very high (81.7 per 100 thousand of the population), and tends to grow steadily. The aim of this paper is to determine the effectiveness of 3D therapy in real clinical practice. Materials and Methods. Clinical charts of 151 patients with hepatitis C who underwent 8- and 12-week 3D and 3D+ ribavirin therapy (3 people) were analyzed. After therapy, the biochemical and virological responses were studied. The density of the liver tissue was determined on the FibriScanCompact 530 (Echosens, France). Results. There was a 100 % rate of sustained virological response to 8- and 12-week 3D therapy in complex groups of patients (extrahepatic manifestations, severe comorbid pathology, patients without previous responce to therapy). Triple therapy (Vikeira Pak) reduced the need for retreatment. Evaluation of interactions of direct antiviral drugs (3D scheme) in combination with ribavirin and without it was carried out with the most frequently prescribed drugs in the cohort of our patients. The 3D therapy regimen had a good safety profile: none of the patients cancelled treatment due to adverse events. Key words: chronic viral hepatitis C, 3D therapy, ombitasvir + paritaprevir + ritonavir, sustained virological response, genotype 1. Гепатит С является глобальной медико-социальной проблемой здравоохранения во всем мире наряду с такими заболеваниями, как ВИЧ-инфекция, туберкулез, гепатит В и ряд других инфекционных болезней. Согласно последним оценкам ВОЗ число больных хроническим гепатитом С (ХГС) в мире в 2015 г. составило 71 млн чел. (1 % населения Земли), из них 5 млн проживает в России. Наибольшее число лиц, состоящих на учете с диагнозом ХГС в РФ, зарегистрировано и проживает в Приволжском федеральном округе – 23,3 % (143 477 чел.). Заболеваемость в г. Ульяновске очень высока, составляет 81,7 на 100 тыс. населения и имеет тенденцию к неуклонному росту. Цель работы – определение эффективности 3D-терапии в реальной клинической практике. Материалы и методы. Проанализированы истории болезни 151 пациента с диагнозом «гепатит С». Все больные прошли курсы терапии 3D и 3D+рибавирин (3 чел.) в режиме 8 и 12 нед. Изучены биохимический, вирусологический ответы, после проведенного курса терапии определена плотность печеночной ткани на аппарате FibriScanCompact 530 (Echosens, Франция). Результаты. Доказана 100 % частота устойчивого вирусологического ответа на 8- и 12-недельные курсы 3D-терапии у сложных групп пациентов (с внепеченочными проявлениями, с тяжелой коморбидной патологией, у пациентов, ранее не отвечавших на терапию). Выбор трехкомпонентной терапии препаратом «Викейра Пак» обоснован возможностью снижения потребности в повторных курсах терапии. Оценка лекарственных взаимодействий препаратов прямого противовирусного действия схемы 3D в сочетании с рибавирином и без него производилась с наиболее часто назначаемыми препаратами в когорте наблюдаемых нами пациентов. Схема 3D-терапии имеет хороший профиль безопасности, ни один из пациентов не прекратил лечение в связи с нежелательными явлениями. Ключевые слова: хронический вирусный гепатит С, 3D-терапия, омбитасфир+паритапревир+ритонавир, устойчивый вирусологический ответ, генотип 1.