Lesson 6: Principles of Disease and Epidemiology. June 30, 2014. Pathology. Pathology - is the scientific study of disease Pathogen —any microbe that can cause a disease Divided into three different parts:
June 30, 2014
Diseases are often classified in terms of how they behave within the host and within a given population
How frequently and where a disease occurs also help to classify the disease
What is the Incidence of AIDS in the World in 1991? What is the Prevalence?
REMEMBER THE OCCURRENCE OF DISEASE ULTIMATELY DEPENDS ON THE RESISTANCE OF THE HOST TO THE GROWTH/SURVIVAL OF THE PATHOGEN!!!!
Inadequate nutrition, fatigue, environment, habits, occupations, pre-existing illness, and emotional distress all are considered to be predisposing factors
People can easily spread disease during the Period of Illness stage
Mechanical transmission—is the passive transport of pathogen via insects’ body parts
Biological transmission—complex process that can be broken down into three parts