Abuur nooc ka sii adag weedhan Laba geedi socod ayaa keena in antigenku isbeddelo: antigenic drift iyo antigenic shift.
Dabcan, qaab kale oo adag oo weedhan ah ayaa ah "Laba geedi socod ayaa u horseeda antigens-ka inuu isbeddelo: u gudbinta antigenic iyo u gudbinta antigenic, u gudbinta antigenic-ka ayaa ah tan ugu caansan. "