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Related Experiment Video

Updated: May 19, 2026

Fabrication of Pulsatile Polymeric Microparticles Encapsulating Rabies Antigen

Fabrication of Pulsatile Polymeric Microparticles Encapsulating Rabies Antigen

Published on: May 12, 2023

The pediatric vaccine stockpiling problem.

Van-Anh Truong¹

¹Industrial Engineering and Operations Research, Columbia University, 500 West 120th Street, New York, NY 10027, United States. vatruong@ieor.columbia.edu

|August 10, 2012

Summary

Managing pediatric vaccine stockpiles is challenging due to production interruptions. This study introduces an efficient policy to optimize vaccine inventory, performing within 1% of optimal levels and reducing stock levels with multiple suppliers.

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Area of Science:

Operations Research
Public Health Policy
Supply Chain Management

Background:

The U.S. faces recurrent disruptions in pediatric vaccine production.
The Centers for Disease Control and Prevention (CDC) manages a national vaccine stockpile to mitigate shortages.
Stockpile management is complicated by limited production capacity and unpredictable interruptions.

Purpose of the Study:

To develop and evaluate optimal policies for managing the national pediatric vaccine stockpile.
To identify conditions under which a modified state-dependent base-stock policy is optimal.
To provide bounds for optimal decision-making in stockpile management.

Main Methods:

Formulation of inventory management policies for vaccine stockpiles.
Derivation of sufficient conditions for optimality of a modified base-stock policy.
Development of an efficient policy with performance bounds and simulation analysis.

Main Results:

An efficient policy was developed, achieving near-optimal performance (within 1% in simulations).
The study identified conditions for a modified state-dependent base-stock policy, decreasing with pipeline inventory.
Analysis showed that uniform stocking across vaccine types can be inefficient; multiple suppliers significantly reduce inventory levels.

Conclusions:

Optimized stockpile management policies are crucial for ensuring pediatric vaccine availability.
The proposed efficient policy offers a practical approach to near-optimal vaccine inventory management.
Diversifying suppliers can lead to substantial reductions in overall vaccine inventory requirements.