A virus may cause a common cold.Logical formLearned from18 sentences. A virus may pertain-to a patient.Logical formLearned from18 sentences. A virus may be injected.Logical formLearned from18 sentences. Some families can be constituted-of-or-filled-with viruses.Logical formLearned from18 sentences. A virus can be unstoppable.Logical formLearned from18 sentences. A strain can be constituted-of-or-filled-with avian (influenza virus).Logical formLearned from18 sentences. Reservoir may pertain-to a virus.Logical formLearned from18 sentences. A symptom may pertain-to a virus.Logical formLearned from18 sentences. Viruses may be detected.Logical formLearned from18 sentences. A (computer virus) can be deadly.Logical formLearned from18 sentences. A virus may persist.Logical formLearned from18 sentences. Antibodies can be for a virus.Logical formLearned from18 sentences. Sore throats may be caused by viruses.Logical formLearned from18 sentences. A (bird flu virus) may be found in a country.Logical formLearned from18 sentences. (Flu viruses) can be regular.Logical formLearned from18 sentences.