Aggressive bacteria do not cause complications in humans but also is highly contagious through the mechanism of spreading as the one given by the airlines in their international flights. So that it constitutes a potential cause to produce either continental or intercontinental spreading of virus or bacteria. Because this transportation involve clearly time and space, in this paper we apply the formalism of Feynman to model the dynamics of virus propagation but emphasizing the rapidity of propagation that to some extent would fit to the Feynman theory and might yields noteworthy inputs for public health operators.