hat
Li konnen ke genyen 16 diferan sous-types EY, (hemagglutinin) Et nèf sous-types NA (neuraminidase) de la viris grip aviaire. Sous-types sa yo kapab melanje ak ak lòt, pwodwi sous-types diferan de maladi a. Poutèt sa konstan combinaisons de sous-types, pwodwi vaccins vin pi difisil. Youn pa janm ka ' konn ki sous-type yo pwal sòti kap vini an, Alewè pou m enpak li, y' a.
eng
It is known that there are 16 different HA (hemagglutinin) subtypes and nine NA (neuraminidase) subtypes of the avian influenza virus. These subtypes can combine with each other, producing different subtypes of the disease. Because of these constant combinations of subtypes, producing vaccines becomes even more difficult. One can never know what subtype will emerge next, let alone what its impact will be.