First and second wave of COVID-19: A comparative study of tertiary care hospitalized patients in Jalgaon, Maharashtra
Background: Most of the countries including India have witnessed two or more waves of Covid 19 pandemic. The present study was conducted to compare the differences in clinico-demographic characteristics and outcomes of Covid 19 patients admitted in first and second wave of Covid 19 pandemic in a tertiary care hospital at Jalgaon, Maharashtra. Methods: A retrospective observational study was conducted at a tertiary care Dedicated Covid hospital for Covid 19 at Jalgaon, Maharashtra. All microbiologically proven corona positive patients were included in the study. The demographic records and clinical history was extracted from the case history sheets of the patients from first as well as second wave using standardized data collection form. Clinical outcome of the patients, i.e., development of complications, death or discharge was also recorded for each enrolled subject. Results: 3845 patients of Covid-19 admitted in the hospital during the first wave of epidemic and 2956 patients during second wave of the epidemic were included in the study. The mean age of patients admitted in the second wave was significantly lower as compared to first [48.77(15.31) years vs 50.23 (14.33) years, P<0.005]. There is increase in proportion of patients in the age group of < 15 years in second wave as compared to first wave (74/2956, 2.5% vs 52/3845, 1.3%). The number of patients requiring admission in ICU at the time of admission increased by 13% in second wave as compared to first wave. [827/2956 (28%) vs 577/3845(15%), P<0.0001]. More than half of the patients who got admitted for Covid 19 in first as well as second wave were having one or more comorbidities.But the proportion of the patients with previous co-morbities was significantly higher in second wave (1684/2956, 57% vs 1960/ 3845, 51%, P= 0.0004). The mortality was also higher in second wave (533/2956, 18.03% vs 541/3845, 14%, P=0.0004). Conclusions: The demographic, clinical characteristics and outcome of Covid 19 patients was different in first and second wave of pandemic with involvement of younger patients, increased rates of admission to ICU and more mortality in the second wave as compared to first wave of the pandemic.