Avian flu may kill some persons.Logical formLearned from12 sentences. A (flu outbreak) can be worldwide.Logical formLearned from12 sentences. Officials may confirm a case of infection of (bird flu).Logical formLearned from12 sentences. (Bird flu outbreaks) can be fresh.Logical formLearned from12 sentences. A (bird flu epidemic) can be deadly.Logical formLearned from12 sentences. A (bird flu outbreak) may pertain-to a nation.Logical formLearned from12 sentences. (Bird flu death) can be in a country.Logical formLearned from12 sentences. (Bird flu deaths) can be suspected.Logical formLearned from12 sentences. A source may pertain-to a (bird flu virus).Logical formLearned from12 sentences. Persons may have avian flu.Logical formLearned from12 sentences. A (bird flu virus) may remain over a period.Logical formLearned from11 sentences. A flu can be as a pandemic.Logical formLearned from11 sentences. A (flu vaccine) may undergo a distribution.Logical formLearned from11 sentences. A (flu outbreak) can be asian.Logical formLearned from11 sentences. A death can be from a flu.Logical formLearned from11 sentences.