A (bird flu) can be contagious.Logical formLearned from49 sentences. A (situation report) can be about (flu cases).Logical formLearned from48 sentences. Samples may pertain-to a (bird flu virus).Logical formLearned from48 sentences. A (flu epidemic) can be deadly.Logical formLearned from48 sentences. A wave can be constituted-of-or-filled-with flu.Logical formLearned from48 sentences. A (bird flu virus) may undergo a mutation.Logical formLearned from48 sentences. A person can be with a flu.Logical formLearned from47 sentences. A (bird flu) may kill some persons.Logical formLearned from47 sentences. Some games can be with a flu.Logical formLearned from47 sentences. A (bird flu virus) may kill some persons.Logical formLearned from46 sentences. A country can be free of (bird flu).Logical formLearned from46 sentences. Symptoms can be similar to a flu.Logical formLearned from45 sentences. A flu can be stupid.Logical formLearned from45 sentences. A (flu bug) can be nasty.Logical formLearned from45 sentences. A (flu season) may undergo a start.Logical formLearned from45 sentences.