Programmatic assessment of electronic Vaccine Intelligence Network (eVIN).

Area of Science:

• Public Health
• Health Informatics
• Supply Chain Management

Background:

• Effective vaccine logistics and cold chain management are critical for public health programs.
• The electronic Vaccine Intelligence Network (eVIN) was developed to digitize vaccine stock management and improve capacity building.
• Implementation of eVIN across 12 Indian states aimed to enhance vaccine utilization and distribution.

Purpose of the Study:

• To assess the programmatic usefulness of the eVIN system in vaccine utilization, stock management, distribution, and documentation.
• To evaluate the impact of eVIN on cold chain points (CCPs) in selected Indian states.
• To analyze changes in vaccine management indicators before and after eVIN implementation.

Main Methods:

• A pre-post study design was employed.
• Cold chain points (CCPs) were selected using a two-stage sampling technique.
• Comparative analysis of primary and secondary data was conducted on key performance indicators.

Main Results:

• Vaccine utilization decreased by approximately 90 million doses, indicating improved efficiency.
• Stock-outs of any vaccine significantly reduced by 30.4% (p<0.001).
• Daily vaccine stock updates increased from 38.6% to 53.5% of facilities, and record completeness substantially improved (p<0.001).

Conclusions:

• eVIN implementation significantly improved vaccine management, stock availability, and documentation accuracy.
• The system streamlined vaccine flow, enhanced equity, and strengthened the vaccine supply chain.
• Upscaling eVIN nationwide is recommended to further improve vaccine efficacy and cold chain management.