The Oxford-AstraZenenca covid-19 vaccine - being developed by Serum Institute - will be called 'COVISHIELD'. Partial results from studies that saw participation of about 24,000 people in Britain, Brazil and South Africa suggest the AstraZeneca shots are safe and about 70 per cent effective in preventing coronavirus infection. The vaccine is expected to be used in many countries because of its low cost and the fact that it can be kept in refrigerators instead of the ultra-cold or freezer temperatures. The vaccine can be stored at 2-8 Degrees for at least six months.