A spread may pertain-to a flu.Logical formLearned from260 sentences. Some outbreaks can be constituted-of-or-filled-with (bird flu).Logical formLearned from237 sentences. Cases may pertain-to a flu.Logical formLearned from237 sentences. A woman may die of (bird flu).Logical formLearned from237 sentences. (Bird flu cases) can be suspected.Logical formLearned from230 sentences. A (bird flu strain) can be deadly.Logical formLearned from221 sentences. Symptoms can be constituted-of-or-filled-with (bird flu).Logical formLearned from214 sentences. A female may have a flu.Logical formLearned from196 sentences. An outbreak may pertain-to a (bird flu virus).Logical formLearned from193 sentences. (Bird flu) may kill some persons.Logical formLearned from187 sentences. (Flu vaccines) can be seasonal.Logical formLearned from186 sentences. (Bird flu) may undergo a transmission.Logical formLearned from183 sentences. Strains can be constituted-of-or-filled-with flu.Logical formLearned from179 sentences. A (flu shot) can be annual.Logical formLearned from178 sentences. A bout can be with a flu.Logical formLearned from177 sentences.