Unicef last week announced two companies would take part in a trial, intended as a way to safely and quickly deliver vaccines to remote villages where health workers sometimes have to walk days.
One of the companies is Melbourne-based Swoop Aero, which will use its two-metre refrigeration drones to deliver vaccines up to 100 kilometres in less than an hour.
Its co-founder, Eric Peck, said that if successful, it would significantly improve reliability.