As countries develop economically from being low-income to higher income, what is the most significant epidemiologic trend? Group of answer choices

a. The burden of disease shifts from communicable disease to infectious disease
b. None of the above
c. The burden of disease shifts from younger people to older people
d. The share of communicable disease declines and the share of non-communicable disease increases

As countries develop economically from being low-income to higher income, the most significant epidemiologic trend is:

d. The share of communicable disease declines and the share of non-communicable disease increases.

Explanation:

Based on the increased economic development, vaccines are more widespread.  Thus, the prevalence of communicable or infectious diseases is reduced drastically.  However, there are no vaccines for non-communicable diseases such as Parkinson's disease, autoimmune diseases, strokes, heart diseases, cancers, diabetes, chronic kidney diseases, osteoarthritis, osteoporosis, Alzheimer's disease, and cataracts.  Unfortunately, most of these non-communicable diseases (NCDs) are suffered more by the older people.