CCM1 and CCM2 are set to be 75% and 50% effective in reducing secondary cases, respectively. We modelled four scenarios: in the first and second, CCM1 is maintained for the first 100 cases followed by 5,000 or 10,000 cases cared for with a CCM2 strategy, in the third and forth, CCM1 is maintained for 500 cases followed by 5,000 and 10,000 cases with a CCM2 strategy, respectively.