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Study the impact of various combinations of comorbid original diseases in patients infected with COVID-19 later on the disease progression and outcomes of the new coronavirus infection.The ACTIV registry was created on the Eurasian Association of Therapists initiative. 5,808 patients have been included in the registry: men and women with COVID-19 treated at hospital or at home.gov ID NCT04492384.Most patients with COVID-19 have original comorbid diseases (oCDs). Polymorbidity assessed by way of simple counting of oCDs is an independent factor in negative outcomes of COVID-19. Search for most frequent combinations of 2, 3 and 4 oCDs has revealed absolute domination of cardiovascular diseases (all possible variants). The most unfavorable combination of 2 oCDs includes atrial hypertension (AH) and chronic heart failure (CHF). The most unfavorable combination of 3 oCDs includes AH, coronary heart disease (CHD) and CHF; the worst combination of 4 oCDs includes AH, CHD, CHF and diabetes mellitus. Such combinations increased the risk of lethal outcomes 3.963, 4.082 and 4.215 times respectively.Polymorbidity determined by way of simple counting of diseases may be estimated as a factor in the lethal outcome risk in the acute phase of COVID-19 in real practice. Most frequent combinations of 2, 3 and 4 diseases in patients with COVID-19 primarily include cardiovascular diseases (AH, CHD and CHF), diabetes mellitus and obesity. Combinations of such diseases increase the COVID-19 lethal outcome risk.Цель. Изучить влияние различных комбинаций сопутствующих заболеваний, существовавших у пациентов исходно, до инфицирования вирусом SARS-CoV-2, на тяжесть течения и исходы новой коронавирусной инфекции. Материалы и методы. Регистр АКТИВ создан по инициативе Евразийской ассоциации терапевтов. В регистр включены 5808 пациентов: мужчины и женщины с диагнозом COVID-19, находящиеся на лечении в стационаре или получающие лечение на дому. Регистрация регистра: идентификатор ClinicalTrials.gov: NCT04492384. Результаты. Подавляющее большинство пациентов с COVID-19 имеют исходные сопутствующие заболевания (иСЗ). Полиморбидность, оцененная методом простого подсчета иСЗ, является самостоятельным фактором негативного прогноза больных COVID-19. Поиск наиболее часто встречающихся комбинаций из 2, 3, 4 и более СЗ выявил абсолютное доминирование сердечно-сосудистых заболеваний во всех возможных вариантах. Наиболее неблагоприятной при сочетании 2 иСЗ была комбинация, включающая артериальную гипертензию (АГ) и хроническую сердечную недостаточность (ХСН), при сочетании 3 иСЗ комбинация, включающая АГ, ишемическую болезнь сердца (ИБС), ХСН, и при сочетании 4 иСЗ комбинация, включающая АГ, ИБС, ХСН и сахарный диабет. Наличие таких комбинаций приводило к росту риска летального исхода в 3,963, 4,082, 4,215 раза соответственно. Заключение. Полиморбидность, определенная методом простого подсчета заболеваний, может использоваться в реальной практике как фактор риска летальности в остром периоде COVID-19. В состав наиболее часто встречающихся комбинаций из 2, 3, 4 заболеваний у пациентов с COVID-19 входят преимущественно сердечно-сосудистые заболевания (АГ, ИБС, ХСН), сахарный диабет и ожирение. Комбинации этих заболеваний повышают риск летального исхода при COVID-19.

Rheumatologic and public health services of Central Asia's republics have suffered hugely as a result of social and economic declines following the dissolution of the Union of Soviet Socialist Republics (USSR) and transition of these republics to market economies. Between 1990 and 2000 there was a mass outflow of highly skilled rheumatologists and teachers and researchers in rheumatology to countries abroad, leading to significant deprivation of rheumatological service in Central Asian countries. During this time, there was continued growth of various rheumatic diseases (RDs) including rheumatic fever, and musculoskeletal and connective tissue disorders. The medical and social burden of RDs imposed on society was strongly underestimated until recent times. There is an urgent need to define the epidemiology of RDs and their impact on the quality of life of people afflicted by these conditions, and to improve the diagnostics and treatment of these conditions.

The epidemiological situation involving rheumatic fever (RF) and rheumatic heart disease (RHD) not only remains unresolved but is also a cause of serious concern due to the rapid increase in the incidence of RF/RHD in many developing countries. After the collapse of the Soviet Union, the republics of Central Asia experienced an economic decline that directly affected the public health sector of this region. This is the main cause of the high prevalence of many infectious diseases in Central Asia, including streptococcal tonsillopharyngitis, which carries the risk of complications such as RF. The difficulty involved in early diagnosis of RF and the development of RHD among children and adolescents causes early mortality and sudden death, leading to economic damage in these countries due to the loss of the young working population. Among all the developing countries, Kyrgyzstan, which is located in the heart of Central Asia, has the highest prevalence of RF/RHD. The increase in the prevalence of RF in Central Asia can be attributed to factors such as the low standard of living and changes in the virulence of streptococci and their sensitivity to antibiotics.

Objective: Rheumatic fever (RF) is well known disease as a result of frequent complication of the group A b- hemolytic streptococcal (GABHS) tonsillopharyngitis, have noticeably grown for the last 15 years among young generation in the Kyrgyz Republic. It is important to hold a study about the prevalence of RF and GABHS and their susceptibility to antibiotics in the Kyrgyz Republic. Materials and Methods: We have studied 200 children with chronic tonsillopharyngitis at the National Center of Pediatrics and Child Surgery in Bishkek (the Kyrgyz Republic) from August till September 2008. 188 (48 out of them are with RF) out of total 200 children are Kyrgyz and 12 are Russian (2 out of them are with RF). 111 out of total are female (34 out of them are with RF) and 89 are male (17 out of them are with RF). The average age of the subjects is 10.9±6.0 (from 3 to 17 years old). The presence of GABHS was assessed using two ways: by the rapid antigen detection test (RADT) for outcrop of streptococcus antigen in smear from mucosal surface of tonsils, and by bacterial culture analysis (BA). RADT was used to determine its specificity and sensitivity in order to recommend practitioners its further wide use. Furthermore, the discovered culture of GABHS have been investigated on susceptibility to antibiotics by disc-diffusion method. Research Results: GABHS antigen was positive in 72 (36.0 %) subjects from RADT and in 80 (40.0%) subjects from BA out of 200 total subjects. In the patients with RF (n=51), GABHS was positive in 18 (35.2%) subjects by RADT and in 24 (47.0%) subjects by BA. In the subjects without RF (n=149), GABHS was positive in 54 (36.2%) subjects by RADT and in 56 (37.5%) by BA. Among 80 GABHS positive results sensitive to antibiotics were: to penicillin only 10 (12.5%), to ampicillin-29 (36.2%), to amoxicillin-36 (45.0%), to ceftriaxon - 31 (38.7%), to roxithromycin - 21 (26.2%), to erythromycin- 19 (23.7%). It is noted that 21 (26.2%) GABHS positive results were absolutely resistant for all these tested antibiotics. RADT showed that its specificity is 85% as well as its sensitivity is equal to 67.5%. Conclusion: In this study the sensitivity of RADT was low; therefore, the negative results of RADT don't exclude presence of GABHS. High prevalence of GABHS antigen demonstrates not only in patients with RF, but also among healthy children (without RF) of the Kyrgyz Republic. The high prevalence of GABHS at children with RF (47.0%), probably, presents a low sensitivity to antibiotics and irregular secondary prophylaxis. Significant presence of GABHS among healthy children (37.5%) requires improvement of primary prevention to prevent further spread of RF and Rheumatic Heart Disease (RHD) in the country.

The incidence of rheumatic fever (RF) has markedly increased in the last 10 years in Kyrgyzstan. Therefore, investigating the prevalence of group A β-hemolytic streptococcus (GABHS), which is the cause of RF, in the Kyrgyzstan population is crucial. We studied 189 subjects: 59 children [29 with RF and/or rheumatic heart disease (RHD)] and 130 adults (15 with RHD). The average age of the subjects was 41.0±10.0 years (range 8 months to 72 years). A general clinical examination and medical history including eating habits was carried out. The prevalence of GABHS was tested using the highly sensitive rapid antigen detection test (RADT) to detect the outcrop of streptococcus antigen in smears taken from the mucosal surface of the tonsils or the back of the throat. GABHS antigen was positive in 70 of a total 189 subjects [37.0%; 22/59 children (37.2%), 48/130 adults (36.9%)]. In patients with RF/RHD (n=44), GABHS was positive in 14 subjects [31.8%; 8/29 children (27.6%), 6/15 adults (40.0%)]. Thirty-two subjects with RF/RHD had frequent episodes of tonsillopharyngitis. In subjects without RF/RHD (n=145), GABHS was positive in 56 subjects [38.6%; 14/30 children (46.6%), 42/115 adults (36.5%)]. Thirty of these subjects had frequent episodes of tonsillopharyngitis. Of the 130 adults, the most-consumed dairy products included yoghurt (n=115; 88.4%), milk kasha (n=75; 57.7%) and milk (n=40; 30.7%). Of the 115 subjects in the yoghurt-consuming group, 44 (38.2%) had positive results for GABHS. In the non-yoghurt-consuming group, 4/15 subjects (26.6%) had positive results for GABHS. Using RADT for GABHS, a high prevalence of GABHS antigen was detected not only in patients with RF/RHD, but also in the healthy population (without RF/RHD). The low GABHS prevalence in children with RF/RHD (27.6%) was probably due to corresponding antibiotic therapy. In conclusion, the high prevalence of GABHS is one of the main reasons for the rapid increase in RF/RHD in Kyrgyzstan, and RADT would be an effective tool for its detection.