n 20 July 2020, the COVID-19 attack rate i.e AR (the total number of cases/ the total population) in Bangladesh was 1218.1 per 1 million and all of the 64 districts have been infected by SARS-CoV-2. The highest AR was observed in the Dhaka division (3,182.6/1,000,000), the most populous division of the country and within the division the country capital Dhaka has the highest AR (almost 12,915.9/1,000,000) [29]. A study showed that the mean reproduction number of COVID-19 in Bangladesh until June 25, 2020, is 1.40 (95% Cl 1.11, 1.73) [30]. Analysis of demographic data of COVID-19 patients elucidated that, though more than 50 % of patients infected by SARS-CoV-2 in Bangladesh are aged between 21 and 40; the highest mortality rate was observed in elderly people aged more than 60 years as they have a relatively weaker immune system (Figure 03) [26, 31].