Countries across sub-Saharan Africa continue to make progress toward improving routine immunization (RI) coverage, yet significant operational challenges remain in delivering potent vaccines to underserved and hard-to-reach populations. Outreach immunization activities are routinely conducted in environments characterized by high ambient temperatures, difficult terrain, extended travel times, intermittent electricity, and limited infrastructure. These realities place considerable pressure on frontline health workers and on the cold chain systems they rely on.

Passive cold chain technologies — particularly vaccine carriers used during fixed-post, outreach, and mobile immunization sessions — remain critical components of national vaccine delivery systems. While traditional vaccine carriers have supported immunization efforts for decades, evolving operational realities increasingly demand innovations that improve portability, ease of use, temperature stability, durability, and overall workflow efficiency for frontline teams. The Eclipse Vaccine Carrier, developed by Gobi Technologies, represents one such next-generation passive cold chain solution.

This webinar, hosted on the TechNet platform, brings together country implementers from Sierra Leone and Nigeria with the product developers to share real-world experiences of deploying the Eclipse carrier across diverse use cases — including routine immunization at health facilities and biological sample transportation for clinical research. The discussion was framed around systems strengthening, implementation learning, and equitable immunization access.