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. Author manuscript; available in PMC: 2019 Jun 11.
Published in final edited form as: Vaccine. 2018 Dec 19;37(4):637–644. doi: 10.1016/j.vaccine.2018.12.010

Fig. 1.

Fig. 1.

Zambia EPI Vaccine Supply Chain. The Zambia EPI supply chain consists of 4 fixed levels (National, Provincial, District, and Health Facility/Post) and a number of outreach locations. The figure above identifies the number of locations modeled at each level, and the frequency and direction of delivery between each level.