Emvólio is a portable, battery-powered refrigeration device that will strictly maintain a pre-set temperature for up to 12 hours for last-mile transport of vaccines. Further device capabilities will include continuous temperature monitoring, location tracking, state of charge indication, and communication with headquarters via live tracking and vital statistics for improved coverage. This device will reduce the economic burden of wasted vaccines and optimize human resources in vaccine delivery by nullifying the need for repeated immunization visits to account for the administering of unviable vaccines. Importantly, the level of portability and ease of charging that it gains from being battery- powered sets Emvólio apart from the competition, which relies on less efficient and impractical means, such as frozen PCM, use of Ammonia or refrigerants, to generate cooling.

However, as things stand, there is no accountability for the samples once they are dispatched from collection centers to the central laboratory for testing. Cold-chain transport systems that rely on ice-based technologies face problems of compliance, accidental freezing and/or warming, and lack of temperature monitoring during transit. Chilled transport media are often unreliable due to power outages and human error during freezing of ice/gel packs, leading to the risk of compromised testing resulting from specimen drying, contamination or degradation.