A (passenger virus) may infect patients.Logical formLearned from1 sentences. A vaccine may infect nasal passages.Logical formLearned from1 sentences. A cell may be infected with some strains of flu.Logical formLearned from1 sentences. A (flu virus) may infect a cell.Logical formLearned from1 sentences. A pig may infect a person.Logical formLearned from1 sentences. Persons may be infected as teenagers.Logical formLearned from1 sentences. Race may infect a criminal-justice system.Logical formLearned from1 sentences. A virus may infect tens of thousands of persons.Logical formLearned from1 sentences. Some others may be infected with a (lung disease).Logical formLearned from1 sentences. Nymphs may be infected with a disease.Logical formLearned from1 sentences. Nymphs may be infected with a disease.Logical formLearned from1 sentences. A problem may infect a texture of daily life.Logical formLearned from1 sentences. A man may be infected with a strain of tb.Logical formLearned from1 sentences. Chimpanzees may be infected with a simian (immunodeficiency virus).Logical formLearned from1 sentences. Domestic cows may be infected by disease.Logical formLearned from1 sentences.