A virus may precipitate a global (flu pandemic).Logical formLearned from13 sentences. An (influenza virus) may undergo a reproduction.Logical formLearned from13 sentences. Vaccination can be against a virus.Logical formLearned from13 sentences. A discovery of a virus may pose a risk to human health.Logical formLearned from13 sentences. A virus may unleash a pandemic.Logical formLearned from13 sentences. A virus may kill millions of persons.Logical formLearned from13 sentences. A strain can be a variant of a virus.Logical formLearned from13 sentences. Case may pertain-to a virus.Logical formLearned from13 sentences. A virus can be likely.Logical formLearned from13 sentences. A death can be from a virus.Logical formLearned from13 sentences. A country may be affected by a virus.Logical formLearned from13 sentences. A virus may be brought under control.Logical formLearned from13 sentences. A virus can be on a run.Logical formLearned from13 sentences. A virus may wreak devastation.Logical formLearned from13 sentences. (Virus sars) can be respiratory.Logical formLearned from13 sentences.