What public health or/and epidemiologic achievements have occurred to improve the quality of life worldwide?

In a short essay, please answer the following question:

 What public health or/and epidemiologic achievements have occurred to improve the quality of life worldwide?

 Please, support your answer with some examples and references

Vaccine introduction to prevent various deadly infectious diseases is one of the profound epidemiological achievements that have occurred to improve the quality of life worldwide. For instance, measles prevention through the MMR vaccine has ensured a 78% reduction in measles mortality between 2000 and 2020. It is averting 12.7 million deaths that occurred in the previous years (World Health Organization, 2020). Besides, the information provided by the Centers for Disease Control and Prevention (2019) attests that in 2014, for example, measles-oriented deaths decreased by 79% in 2014. The total deaths included 114 900 as opposed to the beginning of the century totaling 546, 800…… Read More