Daily Monitor Wednesday February 17 2021 A vial containing the Covid-19 vaccine by AstraZeneca at the Robert Bosch Hospital in Stuttgart, Germany. PHOTO AFP Advertisement The AstraZeneca vaccine being purchased by government has 63 per cent efficacy in preventing Covid-19 illness, the World Health Organisation (WHO) revealed on Monday. “The AstraZeneca/Oxford product is a viral vectored vaccine. AstraZeneca has been found to have 63.09 per cent efficacy and is suitable for low and middle-income countries due to easy storage requirements,” WHO said in a statement, adding the vaccine has been listed for emergency use. This efficacy is, however, 30 per cent below the Pfizer and Moderna vaccines, which are being used in other countries, including Rwanda.