The research that has to come out of social network analysis, in a model is infection particularly difficult to control because that there is no key focal point for the intervention.
An example of intervention is that a group of friends who confronting a friend about their drug to use and asking there friend to seek treatment. An act that is alters the course of disease, injury, or the condition by the initiating of the treatment or performing the procedure or the surgery.
Intervention comes from the Latin which is intervenire, meaning "to come between, the interrupt." Often an intervention is also intended to make things better, like the US government's has intervention to give the food and aid to the Haiti after the earthquake.
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