Epidemiologists are public health professionals who investigate patterns and causes of disease and injury in humans. They seek to reduce the risk and occurrence of negative health outcomes through community education and health policy.hey are often involved with education outreach and survey efforts in communities. Research epidemiologists typically work for universities or in affiliation with federal agencies such as the Centers for Disease Control and Prevention (CDC) or the National Institutes of Health (NIH).
So, sometimes when an elderly person passed peacefully and not altogether unexpectedly, coroners would simply declare that the deceased had died of ânatural causesâ or even âold age.â In these cases, there was always a more specific cause of death, but it may not have been determined or thought to be worth mentioning.
The growth of a population brought about as births exceed deaths. The natural increase rate is calculated by subtracting deaths from births and then dividing the result by theâ¦ number of the total population. Thus, for the UK in 1992, subtracting death rate, 11.2/1000, from birth rate, 13.9/1000, gives a natural increase rate of 2.7/1000. What is non natural increase in population?