Infant mortality rates are impacted by many factors. The health of the mother prior to and during pregnancy, her diet during pregnancy, the availability of prenatal health care, the environment in which she gives birth and provides care to the newborn infant, the availability of health care - including vaccinations against diseases such as measles, tuberculosis, polio, whooping cough, and others - all of these concerns and others directly affect the infant mortality of any given population.
As a result, the goals and objectives established by each nation reflect the health care realities of that particular nation. In countries that have a strong infrastructure of support and treatment possibilities, the goal can be to reduce infant mortality rates to a very low level.
In other countries, the complications presented by shortages of basic health care facilities and treatments or personnel mean that a very low infant mortality rate is an unreachable goal. In those cases, the objectives become increasing the availability of services in order to reduce the infant mortality rate from a very high number to a smaller rate.