Men can be uninfected.Logical formLearned from12 sentences. A woman can be uninfected.Logical formLearned from12 sentences. A population can be uninfected.Logical formLearned from12 sentences. Birds can be uninfected.Logical formLearned from11 sentences. Lesions can be uninfected.Logical formLearned from10 sentences. Some percent of a group of prostitutes may remain uninfected.Logical formLearned from10 sentences. Strains can be uninfected.Logical formLearned from10 sentences. Species can be uninfected.Logical formLearned from9 sentences. Males can be uninfected.Logical formLearned from9 sentences. Survivors can be uninfected.Logical formLearned from8 sentences. A child can be uninfected.Logical formLearned from8 sentences. A patient can be uninfected.Logical formLearned from8 sentences. A host can be uninfected.Logical formLearned from7 sentences. An area can be uninfected.Logical formLearned from7 sentences. A group can be uninfected.Logical formLearned from7 sentences.