hat
Pou konnye a, sèlman kèk sous-types de la viris grip aviaire ont te dirije li pou travèse sou de zwazo yo ki andanje pou moun yo ki andanje. Sous-types sa yo se H9N2, H7N7, H7N3 ak H5N1. De sous-types sa yo, H5N1 te kreye pi gwo alam la nan kominote entènasyonal sante a. Nan mitan sous-types sa ki te rapòte pou afekte l', a sous-type H5N1 s' pou mete la. Sous-type H5N1 a ki te koze plis pase 50 moun mouri pou dat.
eng
So far, only a few subtypes of the avian influenza virus have managed to cross over from the bird species to human species. These subtypes are H9N2, H7N7, H7N3 and H5N1. Of these subtypes, H5N1 has created the biggest alarm within the international health community. Among the subtypes that have been reported to affect humans, the H5N1 subtype appears to be the worst. The H5N1 subtype has caused more than 50 deaths to date.