An onset may pertain-to a flu.Logical formLearned from19 sentences. Fear may pertain-to a flu.Logical formLearned from19 sentences. Strains may pertain-to a (flu virus).Logical formLearned from19 sentences. (Bird flu) may undergo handling.Logical formLearned from19 sentences. A spread may pertain-to an avian flu.Logical formLearned from19 sentences. Some case can be constituted-of-or-filled-with flu.Logical formLearned from19 sentences. A bout can be with flu.Logical formLearned from19 sentences. Persons can be susceptible to flu.Logical formLearned from19 sentences. A (flu expert) can be at an university.Logical formLearned from19 sentences. A deadly outbreak can be constituted-of-or-filled-with flu.Logical formLearned from19 sentences. Some persons may be infected with flu.Logical formLearned from19 sentences. A (flu pandemic) may occur.Logical formLearned from19 sentences. A (bird flu virus) may begin.Logical formLearned from19 sentences. Information can be about (bird flu).Logical formLearned from19 sentences. A male may have (flu symptoms).Logical formLearned from19 sentences.