Or if someone is exposed to certain diseases, doctors might prescribe injections of gamma globulin, extracted from the blood plasma of people who already had immunity.
Loko munhu a ri ni vuvabyi byo karhi, madokodela ma nga ha n'wi tlhava nayiti leyi nga ni gamma globulin leyi tekiweke eka vanhu lava ana se va tshunguriweke vuvabyi byebyo.