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Open Journal of Epidemiology 2021年第2期11卷 135-151页

作者： Fatma al Fahdi Padmamohan J. Kurup lamya al balushi Mohammed Amin Balqees al Siyabi Mariam al Kalbani Haleema al Ghazaili Salwa al Mashari Hanan al Kindi Disease Surveillance and Control Directorate General of Health Services Muscat Governorate Ministry of Health Muscat Oman Directorate General of Disease Surveillance & Control Ministry of Health Muscat Oman Primary Health Care Directorate General of Health Services Muscat Governorate Ministry of Health Muscat Oman

Introduction: The coronavirus disease 2019 epidemic emerged in December 2019 and spread worldwide. Since workplaces are high-risk location for occupational exposure, understanding of the dynamics of COVID-19 clusters... 详细信息

align="justify"> Introduction: The coronavirus disease 2019 epidemic emerged in December 2019 and spread worldwide. Since workplaces are high-risk location for occupational exposure, understanding of the dynamics of COVID-19 clusters in occupational settings helps reduce the transmission of infectious disease in workplaces. This study presents an overview of the epidemiological characteristics of COVID-19 workplace clusters, preventive strategies adopted and outbreak responses undertaken in Muscat governorate. Materials and Methods: This is a descriptive study on the epidemiological characteristics of cases and distribution of workplace-related clusters of COVID-19 in Muscat Governorate in Oman. Results: A total of 36,798 COVID-19 cases were confirmed in Muscat from 24th February to 31st July 2020 in which 40.5% was belonging to clusters. Out of them 61% were Workplace-Dormitory clusters, predominantly expatriates. 78.6% of employees were symptomatic at time of examination. Fever and cough were the two most common symptoms reported in workplace related clusters. The number of affected employees ranged from 2 to 358 per cluster. Construction, retail, food, beverages, services, industrial manufacturing, oil & gas and transportation were identified as most at risk settings. Within the cases in workplace-related clusters, there was significant higher prevalence of diabetes, hypertension and obesity among females compared to males as also Omani nationals compared to expatriates and smoking among expatriate males compared to Omani males. In conclusion, understanding the epidemiological characteristics of the affected cases in organization setting will assist the policymakers to understand patterns of epidemiological spread and plan for robust interventions. <

关键词： COVID-19 Epidemiology Clusters Occupational Workplace Dormitories

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Epidemiological Characteristics of COVID-19 Confirmed Cases in Muscat Governorate, Sultanate of Oman

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Open Journal of Epidemiology 2021年第1期11卷 56-69页

作者： lamya al balushi Fatma al Fahdi Thamra al Ghafri Mohammed Amin Jeffrey Singh Balqees al Siyabi Mariam al Kalbani Maya al Kindi Fatma al balushi Haleema al Ghazaili Malak al alwai Salwa al Mashari Hanan al Kindi Ahlam al Rumhi Ibtisam al Shidhani Zainb al balushi Padmamohan J. Kurup Fatma al Ajmi Disease Surveillance and Control Directorate General for Health Services Muscat Governorate Ministry of Health Muscat Oman Directorate General for Health Services Muscat Governorate Ministry of Health Muscat Oman Primary Health Care Directorate General for Health Services Muscat Governorate Ministry of Health Muscat Oman Directorate General of Khoula Hospital Muscat Oman Directorate General for Disease Surveillance and Control Ministry of Health Muscat Oman

Introduction: The coronavirus disease 2019 (COVID-19) was declared as pandemic by WHO by March 11th. First case reported in Oman was on 24th February 2020 and later the country went through stages of epidemic progression. This study describes the sociodemographic and epidemiological characteristics of confirmed COVID-19 cases in Muscat governorate and related outcomes. Materials and Methods: This is a descriptive, exploratory analysis of all lab confirmed COVID 19 cases that were reported from 1st February to 31st May 2020. Data for the study was primarily extracted from notifications system established for surveillance (Tarassud). Secondary data sources were, contact listings and hospital medical records. Results: 11,648 initial cases of confirmed COVID-19 infections were included. The mean age was 35 years, 84.7% (N = 9862) were males, 25.9% (N = 3017) were Omanis, and 74.1% (N = 8631) were expatriates of which Indian origin were the majority (37%). Fever and cough were the most common presentations (46.3% and 29.5% respectively). Diabetes and hypertension were the most common comorbidities (4.9% and 4.6% respectively). Hospital admission was required for 7% (N = 811) of the total reported cases, out of them 171 cases (21%) were admitted to ICU, where 107 (13.2%) were ventilated. The case fatality rate (CFR) was 0.9%. 158 clusters containing 2949 contacts were identified from case records and categorised into 3 groups based on their exposure settings. The incubation period measured was 8 days (IQR 4.0 - 15.0) for workplace, 8 days (IQR 4 - 17) for dormitory and 4 days (IQR 2.0 - 7.0) for family groups. The secondary attack rate (SAR) estimated was 41.6% (95% CI: 0.34 - 0.48), 52% (95% CI: 0.40 - 0.63) and 33% (95% CI: 0.27 - 0.38) for workplace, dormitory and family groups, respectively. Conclusion: Results of this study, determine the transmission trend of COVID-19 in a country with high immigran

关键词： COVID-19 Epidemiological Characteristics Infectious Disease Cluster

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Epidemiological Characteristics of COVID-19 Confirmed Cases in Muscat Governorate, Sultanate of Oman

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Open Journal of Epidemiology（流行病学期刊） 2021年第1期

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