An illness may infect some persons.Logical formLearned from8 sentences. A boy may be infected.Logical formLearned from8 sentences. Patients may be infected with a virus.Logical formLearned from7 sentences. Women may be infected with hiv/aids.Logical formLearned from7 sentences. Some swans may be infected with a strain of (bird flu).Logical formLearned from7 sentences. A form may infect humans.Logical formLearned from7 sentences. Doctors may be infected.Logical formLearned from7 sentences. Some cows may be infected.Logical formLearned from7 sentences. Some salmon may be infected.Logical formLearned from7 sentences. Organs may be infected.Logical formLearned from7 sentences. Persons may be infected with smallpox.Logical formLearned from7 sentences. Species may infect birds.Logical formLearned from7 sentences. Computers may be infected with malicious software.Logical formLearned from7 sentences. Persons may be infected with a parasite.Logical formLearned from7 sentences. A host may be infected with a worm.Logical formLearned from7 sentences.