 Ikigo BioNTech nuruganda rwimiti rwa Pfizer rwo muri Amerika bakorana, ku wa mbere batangaje ko urukingo rwabo rufite ubushobozi bwo kurinda abantu kwandura Covid-19 ku kigero kirenga 90, nkuko bigaragazwa nibyibanze byavuye mu bushakashatsi bwo mu cyiciro cya gatatu. 