Why the death rate is much higher in developed countries like U.S.A than Bangladesh in Covid 19?
This comes from age distribution differences (more old people in developed countries) and of course the screening. More people proved to die due to Covid-19. As a third factor add geographical differences, not to forget the pandemic is not over and we don't know the final numbers.
Although we can't finalise the effect of pandemic on both countries since the pandemic is not over yet but in my opinion the case is the matter of Age and other chronic deseases are higher in Developed countries such as USA than developing such as Bangladesh
Are developing country people highly immune due to their more challenging life than developed country people?
i think,also the type of food eaten in terms of freshness or tinned/frozen.