Concept

Risk Factors

HE A LTH EDUC A TION H E A L T H 1 0 0 V E R S I O N 3 / What causes infectious diseases?

"Human biology is another factor to consider in explaining the cause of infectious diseases. Infancy and old age, inadequate nourishment, other illnesses and some types of medication can all create conditions in the body in which infection is more easily established. In addition, there are individual human behaviors, habits and traditional practices that contribute to the causes of infectious diseases by spreading pathogens from one person to another. These behaviors give some clues about the routes by which pathogens can be transmitted."

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