A firm, Prezzo Shed Investment Ltd, has commenced a nationwide retraining programme for about 200 technicians responsible for the installation, maintenance and servicing of vaccine cold-chain equipment across Nigeria. He said technicians often had to travel to primary healthcare facilities in villages and other hard-to-reach locations where vaccine cold-chain equipment is installed. Every village in this country has a primary healthcare facility, and in every primary healthcare facility you have vaccine cold-chain equipment. Bwile said a significant proportion of cold-chain equipment currently out of service were units no longer covered by warranties. He described the situation as a challenge that stakeholders must collectively address to strengthen Nigeria’s vaccine cold-chain system.