translation.en: A, B and C. The most significant threat to humans arises from the influenza A viruses. The natural reservoir of influenza viruses is a diverse and constantly changing pool of viruses among wild water bird populations, the avian influenza (AI) viruses.
translation.ga: A, B agus C. Is í an bhagairt is suntasaí do dhaoine ná víris an fhliú de chineál A. Tá an taiscumar nádúrtha do víris an fhliú ina umar ilghnéitheach víreas atá síor-athraitheach i measc daonra na n-éan fiáin uisce, víris an fhliú éanúil (FÉ).