Final answer:
Countries like Afghanistan and those in Sub-Saharan Africa experience high infant mortality rates (IMR) of more than 20 deaths per 1,000 live births, often due to poverty and inadequate healthcare.
Step-by-step explanation:
According to data from the United Nations and the Central Intelligence Agency, infant mortality rates (IMR) highlight significant global health disparities, with higher rates typically found in developing countries. IMR is calculated as the number of infant deaths per one thousand live births in the first year of life and serves as an important indicator of a country's overall health. Two countries with an IMR of more than 20 infant deaths per 1,000 live births include Afghanistan and many countries within Sub-Saharan Africa, where rates can be more than ten times higher than in developed countries. Contributing factors to high IMRs are poverty, malnutrition, disease, lack of access to quality health care, and unsanitary living conditions.