Before revision:  To reestablish control  , a lockdown (circuit breaker) has to strike a delicate balance between duration, stringency, and timeliness; otherwise, lockdowns are ineffective, or their effect is soon lost. However, once reestablishing control at low case numbers, no additional lockdowns are necessary.
After revision:  To reestablish control , a lockdown is required. 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. Hence, at low case numbers, no additional lockdowns are necessary.