Ikigo BioNTech n'uruganda rw'imiti 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 n'ibyibanze byavuye mu bushakashatsi bwo mu cyiciro cya gatatu.
