A (vaccine virus) may undergo a transmission.Logical formLearned from21 sentences. A country may have a virus.Logical formLearned from21 sentences. A virus can be resistant to drugs.Logical formLearned from21 sentences. A person may use a virus.Logical formLearned from21 sentences. A virus can be democratic.Logical formLearned from21 sentences. Viruses may pertain-to persons.Logical formLearned from21 sentences. Viruses may undergo a movement.Logical formLearned from21 sentences. A person may receive a virus.Logical formLearned from21 sentences. Viruses can be gastrointestinal.Logical formLearned from21 sentences. A virus may be dubbed.Logical formLearned from21 sentences. Viruses may undergo a discovery.Logical formLearned from21 sentences. A (necrosis virus) can be infectious.Logical formLearned from21 sentences. Protection can be against a virus.Logical formLearned from21 sentences. A (flu virus) may emerge.Logical formLearned from21 sentences. A virus can be brand-new.Logical formLearned from21 sentences.