  This paper describes an agent-based model of epidemics dynamics. This model
is willingly simplified, as its goal is not to predict the evolution of the
epidemics, but to explain the underlying mechanisms in an interactive way. This
model allows to compare screening prioritisation strategies, as well as
vaccination priority strategies, on a virtual population. The model is
implemented in Netlogo in different simulators, published online to let people
experiment with them. This paper reports on the model design, implementation,
and experimentations. In particular we have compared screening strategies to
evaluate the epidemics vs control it by quarantining infectious people; and we
have compared vaccinating older people with more risk factors, vs younger
people with more social contacts.
