A virus can be in a family.Logical formLearned from24 sentences. An (incubation period) may pertain-to a virus.Logical formLearned from24 sentences. Nevirapine may reduce a transmission of a virus from mother.Logical formLearned from24 sentences. A virus may have potential.Logical formLearned from24 sentences. Persons can be with a human (immunodeficiency virus).Logical formLearned from24 sentences. A virus can be asian.Logical formLearned from24 sentences. Viruses may undergo a production.Logical formLearned from24 sentences. A virus may undergo an importation.Logical formLearned from24 sentences. A cousin may pertain-to a virus.Logical formLearned from24 sentences. Persons may spread a virus.Logical formLearned from23 sentences. Viruses may undergo spreadings.Logical formLearned from23 sentences. A vaccine can be against a (bird flu virus).Logical formLearned from23 sentences. A host may pertain-to a virus.Logical formLearned from23 sentences. A protein may pertain-to a virus.Logical formLearned from23 sentences. A virus may begin.Logical formLearned from23 sentences.