In fact, we have been inoculated from the experience of contagion.
But although desire cannot be imparted by argument, it can be by contagion.
In addition, the protests had been largely contained to very specific areas and the fear of contagion never materialized.
contagion con·ta·gion (kən-tā'jən)
Disease transmission by direct or indirect contact.
A disease that is or may be transmitted by direct or indirect contact; a contagious disease.