Ubushakashatsi bushya bwo ku rwego rw'isi bwasohotse mu kinyamakuru cyandika ku nkuru z'ubushakashatsi mu buvuzi cya The Lancet, bwashimangiye ubwa bubanjirije bwagaragaje ko ingano iyo ari yo yose y'ikinyobwa gisembuye atari nziza ku buzima.
