Both , righteousness and wickedness are contagious qualities . Its up to the individual which one of the two to choose during his/her earthly life’s journey. The first leads to a splendid life ,the other one leads to cessation.
(( Its very easy to be bad but its very hard to be good, for it demands courage,strength , willingness , openness and most of all humility . Jalal Michael Sabbagh-https://mysuccessisyoursuccess.wordpress.com ))