Before revision:  We show that a lockdown is either effective within a few weeks, or tends to fail its aim. If effective, recurring lockdowns are not necessary -- contrary to the oscillating dynamics previously presented in the context of circuit breakers, and contrary to a regime with high case numbers -- if moderate contact reductions are maintained.
After revision:  We show that a lockdown can reestablish control and that recurring lockdowns are not necessary -- contrary to the oscillating dynamics previously presented in the context of circuit breakers, and contrary to a regime with high case numbers -- if moderate contact reductions are maintained.