Public health in the Bangladesh in the early 1900s focused on improving sanitation, controlling infectious diseases, assuring the safety of the food and water supply, and providing immunizations to children with a workforce composed mostly of physicians, nurses, and biological scientists.

Today's public health challenges are much broader. Efforts aimed at increasing health-related quality of life and eliminating health disparities, public health that include cleaning up the environment, eliminating health disparities, wisely using new scientific knowledge and technology, attending to children's physical and emotional development, and aging healthily.

 This public health education provide an in-depth examination of these  areas of critical importance  in the 21st century. Competency in each of these areas will enable public health professionals to better function within the ecological model ,thereby contributing effectively to programs, policies, and research designed to improve the health of the public.

So i think public health should be mandatory for all University students across Bangladesh for  protect our peoples and protect ourselves. In current situation we feel how mandatory it is, Covid-19 are spreading with new variants, lack of public awareness, For this situation public health specialist have a roll.