Table 3.

Target Population, Coverage Rate, Wastage Factor, and Buffer Stock for Routine Vaccination and Preventive and Catch-up Campaigns Against Group A Neisseria meningitidis

Parameters	Routine Vaccination (2015–2035)	Catch-up Campaign (2015)	Preventive Campaigns (2010)
Total target populationa	15 795 911	2 431 328	11 023 447
Coverage rate	80%	100%	100%b
Total effective target populationc	12 212 780	2 995 304	11 023 447
Wastage factor	1.67	1.15	1.15
Buffer stock	25%	0%	0%
Total No. of vaccine dosesd	20 643 066	2 796 027	12 205 400e

^a For the preventive campaigns, the target population is the one of 2010 only as the campaign is implemented only once during the total period.

^b Rate based on administrative coverage, used for the calculation of costs. A lower rate of 95%, based on a coverage survey estimate, is used for assessment of the epidemiological impact.

^c Routine effective target population = surviving infant population × rollout factor (accounting for partial year introduction in the first year) × coverage. Campaign effective target population = target population (assuming a plan to cover 100% of the target population).

^d Number of doses = [effective target population × wastage factor] + buffer. Buffer applies to routine only; for year x = 0.25 × [doses year x – Doses year x – 1] if this difference is positive; otherwise buffer = 0.

^e Source: World Health Organization. Summary report on the 2 phase meningitis vaccination campaign in Burkina Faso, January 2011.