Before revision:  The containment measures are modeled by considering a time-dependent modulation of the bare infectivity \lambda leading to an effective infectivity that decays in time for each infected individual, mimicking for instance the combined effect of  asymptomatic onset of the disease, testing policies and quarantine.
After revision:  The containment measures are modeled by considering a time-dependent modulation of the bare infectivity \lambda leading to effective infectivity that decays in time for each infected individual, mimicking for instance the combined effect of asymptomatic onset of the disease, testing policies and quarantine.