  In this paper, we study into the impact of the preference of an individual
for public transport on the spread of infectious disease, through a quantity
known as the public mobility. Our theoretical and numerical results based on a
constructed model reveal that if the average public mobility of the agents is
fixed, an increase in the diversity of the agents' public mobility reduces the
epidemic threshold, beyond which an enhancement in the rate of infection is
observed. Our findings provide an approach to improve the resistance of a
society against infectious disease, while preserving the utilization rate of
the public transportation system.
