Socioeconomic status,Transportation,Housing,Access to services,Discrimination by social grouping (e.g., race, gender, or class),Social or environmental stressors.Certain factors that contribute to the development of illness are: Poverty,Unemployment,High School Education,
Health Insurance.
Communicable diseases spread from one person to another or from an animal to a person. The spread often happens via airborne viruses or bacteria, but also through blood or other bodily fluid. The terms infectious and contagious are also used to describe a communicable disease.
A communicable disease chain is the chain of infection,which includes:
INFECTIOUS DISEASE:Any microorganism that can cause a disease such as a bacterium, virus, parasite, or fungus.
RESERVOIR: The place where the microorganism resides, thrives, and reproduces, i.e., food, water, toilet seat, elevator buttons, human feces, respiratory secretions.
PORTAL OF EXIT : The place where the organism leaves the reservoir, such as the respiratory tract (nose, mouth), intestinal tract (rectum), urinary tract, or blood and other body fluids.
MODE OF TRANSMISSION :The means by which an organism transfers from one carrier to another by either direct transmission (direct contact between infectious host and susceptible host) or indirect transmission (which involves an intermediate carrier like an environmental surface or piece of medical equipment).
PORTAL OF ENTRY : The opening where an infectious disease enters the host’s body such as mucus