Vaccines may include strains of a virus.Logical formLearned from14 sentences. Damage can be by viruses.Logical formLearned from14 sentences. A person may get a (stomach virus).Logical formLearned from14 sentences. A source can be constituted-of-or-filled-with viruses.Logical formLearned from14 sentences. (Computer viruses) may pertain-to a person.Logical formLearned from14 sentences. Virus may undergo an analysis.Logical formLearned from14 sentences. Varieties may pertain-to a virus.Logical formLearned from14 sentences. A virus can be lovely.Logical formLearned from14 sentences. A virus may be attached.Logical formLearned from14 sentences. A virus can be constituted-of-or-filled-with fear.Logical formLearned from14 sentences. Risk can be for respiratory virus.Logical formLearned from14 sentences. A person may have a (computer virus).Logical formLearned from14 sentences. Respiratory virus may be related.Logical formLearned from14 sentences. A virus can be lethal to humans.Logical formLearned from14 sentences. A virus may bear a gene.Logical formLearned from14 sentences.