Some strains can be constituted-of-or-filled-with viruses.Logical formLearned from30 sentences. Resistance can be to viruses.Logical formLearned from30 sentences. A virus may be discovered in a country.Logical formLearned from30 sentences. A virus can be undetectable.Logical formLearned from30 sentences. Downloads can be free from viruses.Logical formLearned from30 sentences. A genetic code may pertain-to a virus.Logical formLearned from30 sentences. Virus can be a disease.Logical formLearned from30 sentences. Mosquitoes may carry viruses.Logical formLearned from30 sentences. A virus can be foamy.Logical formLearned from30 sentences. Users may be protected against (virus threats).Logical formLearned from30 sentences. Outbreaks can be constituted-of-or-filled-with virus.Logical formLearned from30 sentences. A virus may remain a disease.Logical formLearned from30 sentences. Tests may confirm presence of a virus.Logical formLearned from30 sentences. A virus can be hard.Logical formLearned from30 sentences. A nurse may contract a virus.Logical formLearned from30 sentences.