A virus can be little-known.Logical formLearned from14 sentences. A virus may spread in a country.Logical formLearned from14 sentences. A case of a virus may be confirmed.Logical formLearned from14 sentences. A man may have a virus.Logical formLearned from14 sentences. Some hemophiliacs may contract a virus.Logical formLearned from14 sentences. An ability may pertain-to viruses.Logical formLearned from14 sentences. A woman may contract a virus.Logical formLearned from13 sentences. A (flu virus) may be identified.Logical formLearned from13 sentences. Strains may pertain-to a human (papilloma virus).Logical formLearned from13 sentences. Hospital can be with a virus.Logical formLearned from13 sentences. A virus may cause a form of a disease.Logical formLearned from13 sentences. An occurrence may pertain-to a virus.Logical formLearned from13 sentences. Presence may pertain-to a (h5n1 virus).Logical formLearned from13 sentences. A virus may spread across a continent.Logical formLearned from13 sentences. Viruses can be infectious.Logical formLearned from13 sentences.