And it remains unclear whether existing off-grid fridges can keep the vaccines cold enough to help. First-generation solar refrigerators were an improvement, but they required storage batteries that often stopped working after two to three years and were hard to replace. FACTORY TO VILLAGEIt is not only ultra-cold temperatures for COVID-19 vaccines that Africa may need to contend with. But the amounts involved were a tiny fraction of what would be needed for an effective COVID-19 vaccine. Peters is hoping COVID-19 vaccines will require only the standard cold storage at 2-8C, which solar direct-drive refrigerators can provide at rural health centres.

Source: bd News24 October 31, 2020 14:15 UTC