The personnel and personnel time that is needed to implement such measures depends on the number of local health departments involved, their capacity and many other factors. The maximum number of antivirals, however, can be estimated. Assuming that each case has 15 contacts that merit attention for CCM1 and would get antiviral post exposure prophylaxis, this would result in a maximum of 500615 ( = 7,500) treatment courses (as the number of doses for treatment equals the number of doses for prophylaxis). Further, if the household members of 10,000 cases are given antiviral prophylaxis this would amount to another 10,00063 ( = 30,000) treatment courses, in total 37,500 treatment courses.