Symptoms may pertain-to a flu.Logical formLearned from58 sentences. (Flu cases) can be suspected.Logical formLearned from58 sentences. A (flu activity) can be widespread.Logical formLearned from58 sentences. A female may have flu.Logical formLearned from58 sentences. A country may report some (bird flu outbreaks).Logical formLearned from58 sentences. A (flu season) may pertain-to year.Logical formLearned from57 sentences. Some persons may die of flu.Logical formLearned from57 sentences. A (flu season) can be annual.Logical formLearned from57 sentences. A country may report a case of flu.Logical formLearned from57 sentences. (Bird flu outbreak) can be in a country.Logical formLearned from56 sentences. A (flu strain) can be deadly.Logical formLearned from56 sentences. A (bird flu outbreak) can be suspected.Logical formLearned from56 sentences. Effects may pertain-to a flu.Logical formLearned from56 sentences. Signs can be constituted-of-or-filled-with (bird flu).Logical formLearned from56 sentences. A person may get a flu.Logical formLearned from55 sentences.