  We are facing a common serious issue, infectious diseases, and trying to
suppress the spreading of infection. We need less contact with each other to
decrease the chance of infection, but this means loss of economic activity, as
well. This tradeoff is inevitable in our society, because we still need direct
communication and commuting, so far. The focus of our paper is the structure of
society, on which we have direct contacts. We study on spreading process with
artificial sosiety model, where each agent has daily cycle and go office and
back home, every day. At the same time, infection spreads along SIR model. We
show both slow infection and short commuting can be realized with some
structures and vice versa. The most effective factor for such features is
modularity of society. In highly modular society, agents live around the
destined office, but agents commute long way to their office and can be
infected fast, in not modular society. The first infection point is one more
factor for the features. If the first infection takes place around the office,
infection spreads slower. On the contrary, if the first one takes place far
away from the office, infection can be fast. We show a design principle, high
modularity and sparsely distributed offices, for good society and discuss on
possible solutions in real society, where we live in.
