A case can be constituted-of-or-filled-with (stomach flu).Logical formLearned from50 sentences. Persons can be with flu.Logical formLearned from50 sentences. Some (flu cases) may be reported in european countries.Logical formLearned from49 sentences. Cases may pertain-to a (bird flu).Logical formLearned from49 sentences. A (flu vaccine) can be regular.Logical formLearned from49 sentences. A bout can be with a flu.Logical formLearned from49 sentences. A dose can be constituted-of-or-filled-with flu.Logical formLearned from49 sentences. A flu can be horrible.Logical formLearned from49 sentences. A person may recover from a flu.Logical formLearned from49 sentences. A flu may undergo complications.Logical formLearned from49 sentences. A (flu vaccine) can be enough.Logical formLearned from49 sentences. Flu can be in a country.Logical formLearned from49 sentences. A strain of (bird flu) may mutate into a form.Logical formLearned from49 sentences. A global (flu pandemic) may kill millions.Logical formLearned from49 sentences. A vaccine can be against flu.Logical formLearned from49 sentences.