Covid update: 25 February 2021 25 Feb 2021 A round up of this week's coronavirus-related news and countermeasures from the photonics industry. A technician preparing a solar powered refrigerator for a dispensary in Kenya. Solar-powered refrigerators could be a game-changer in Africaâs fight against Covid-19 by helping the continent to store and distribute vaccines, especially in rural and remote areas with no connection to electricity. As the world is rolling out mass vaccinations against Covid-19, experts from the Global Environment Facility-funded Sure Chill vaccine storage project in Colombia, Eswatini and Kenya add that equipping health facilities not connected to the national grid with solar-powered refrigerators could be key to reaching rural populations.