Clinical and epidemiological characteristics and outcome of patients with COVID-19 in Sri Lanka; an observational study

Background Clinical manifestations of coronavirus disease 2019 (COVID19) can vary from asymptomatic to profusely symptomatic due to many factors. Having data on the clinical characteristics of the affected patients is important for the screening and diagnosis of COVID-19. Main objective of this study is to evaluate the clinical and epidemiological characteristics and outcomes of patients with COVID-19 admitted to six treatment centres in Sri Lanka. Methods For the specific epidemic situation of COVID-19, we chose to conduct a descriptive retrospective study from six treatment centres in the country between March 10, 2020 and May 30, 2020. Results The study included 431 laboratory confirmed patients with COVID-19. Of them, 335 (78.2%) were males and their mean age was 37 years. Most patients (373: 86.5%) had had close contact with COVID-19 positive patients. The majority were asymptomatic (243: 56.3%) and of the symptomatic patients, the most common symptom was sore throat (81, 19%), followed by cough (72, 17%), headache (72, 17%), fever (50, 12%), and nasal discharge (36, 8%). Eight patients required either high dependency care or intensive unit care two of them succumbed to the illness (0.5%). Hydroxychloroquine (HCQ) was used as a treatment in 248 patients and they had a significantly longer (17.6 days) duration of hospital stays compared those who were not treated (13.6 days) with HCQ. When the HCQ was not used as a treatment, asymptomatic individuals had significantly shorter durations of hospital (11.1 days) stays compared to symptomatic individuals (14.3 days). Conclusions The majority of patients remained asymptomatic during the course of illness. The most common symptom was sore throat, seen in one fifth of patients, followed by cough, and headache. Our study also indicated the possibility of reduced viral clearance and hence longer duration of hospital stays with HCQ.