Viruses may change.Logical formLearned from44 sentences. A virus can be dormant.Logical formLearned from44 sentences. A virus may enter a body.Logical formLearned from44 sentences. Part may pertain-to a virus.Logical formLearned from44 sentences. A severity may pertain-to a virus.Logical formLearned from44 sentences. A form may pertain-to a (bird flu virus).Logical formLearned from44 sentences. A virus may resurface.Logical formLearned from44 sentences. Traces may pertain-to a virus.Logical formLearned from44 sentences. A (flu virus) can be in an international-political-entity.Logical formLearned from43 sentences. A (h5n1 virus) can be deadly.Logical formLearned from43 sentences. A virus may be destroyed.Logical formLearned from43 sentences. An entry may pertain-to a virus.Logical formLearned from43 sentences. A virus can be mild.Logical formLearned from43 sentences. A (stomach virus) can be contagious.Logical formLearned from43 sentences. A virus can be in the world.Logical formLearned from42 sentences.