Ears may be infected.Logical formLearned from16 sentences. A (bird flu strain) may infect humans.Logical formLearned from16 sentences. A plant may be infected.Logical formLearned from16 sentences. A computer may be infected by a virus.Logical formLearned from16 sentences. Persons may be infected with cholera.Logical formLearned from16 sentences. Men may be infected with a virus.Logical formLearned from16 sentences. Birds may be infected with a virus.Logical formLearned from16 sentences. A woman may be infected.Logical formLearned from16 sentences. A population may be infected with a virus.Logical formLearned from16 sentences. An animal may be infected with mad disease.Logical formLearned from16 sentences. Some percent of gay men may be infected.Logical formLearned from16 sentences. A bird may be infected with a virus.Logical formLearned from16 sentences. An epidemic may infect some persons.Logical formLearned from15 sentences. A donor may be infected.Logical formLearned from15 sentences. Individuals may be infected with a virus.Logical formLearned from15 sentences.