A male may get a flu.Logical formLearned from73 sentences. A (bird flu case) can be suspected.Logical formLearned from72 sentences. A shortage can be constituted-of-or-filled-with (flu vaccine).Logical formLearned from72 sentences. A pandemic can be constituted-of-or-filled-with (bird flu).Logical formLearned from72 sentences. A (bird flu crisis) may pertain-to a continent.Logical formLearned from72 sentences. A flu may kill some persons.Logical formLearned from71 sentences. A (flu season) can be regular.Logical formLearned from71 sentences. A vaccine can be against (bird flu).Logical formLearned from71 sentences. A (bird flu) can be lethal.Logical formLearned from70 sentences. A country may report a (flu case).Logical formLearned from69 sentences. A person may get a (flu shot).Logical formLearned from69 sentences. A case can be constituted-of-or-filled-with avian flu.Logical formLearned from69 sentences. Fears can be constituted-of-or-filled-with (bird flu).Logical formLearned from69 sentences. A strain may pertain-to a (flu virus).Logical formLearned from68 sentences. A form can be constituted-of-or-filled-with flu.Logical formLearned from68 sentences.