Epidemiological comparison of the first and second wave of COVID-19 Pandemic in Dhaka, Bangladesh: A cross-sectional study among suspected cases.

Abstract

Many countries have been seen two wave patterns of reported cases of coronavirus diseases. Still, a limited number of studies compared the epidemiological attributes of the first wave and second wave of coronavirus diseases 2019 (COVID-19) outbreak. This study was carried out to compare the epidemiological features of two waves in Bangladesh. This observational study data of suspectsed cases were collected from June 2020 to April 2021 from a local authorized diagnostic center. From June 27 2020 to July 27 2020 was considered the first wave and from March 20 2021 to April 20, 2021 was considered a second wave. This period was determined because of observing the highest number of positive cases during that period. Out of 21,359 cases, including 2429 (11.37%) individuals in the first wave and 4989 (23.36%) individuals had RT-PCR test for disease confirmation. Among them, 315 people in the first wave and 630 in the second wave were positive for SARS-CoV-2 RNA. Male were more vernalized to the positive case, including 204 (64.8%) and 421 (66.8%) during the first and second waves. People under 41 found 56.2% positive cases while it was 65.6% in the second wave. We also found 128 positive cases among international travelers. In conclusion, a large extent of different epidemiological attributes was found in the second wave compared to the first wave of the outbreaks. [ J Adv Biotechnol Exp Ther 2022; 5(1.000): 115-125]

Keywords

• bangladesh
• covid-19
• epidemiology
• first wave
• second wave