A male may be infected by a virus.Logical formLearned from15 sentences. Doses can be constituted-of-or-filled-with virus.Logical formLearned from15 sentences. Drugs may fight a virus.Logical formLearned from15 sentences. Studies may pertain-to a virus.Logical formLearned from15 sentences. Researcher may study a virus.Logical formLearned from15 sentences. A virus may be transmitted through sexual contact.Logical formLearned from15 sentences. (Blood products) may be infected with a virus.Logical formLearned from15 sentences. Protection can be against a virus.Logical formLearned from15 sentences. A virus can be in a patient.Logical formLearned from15 sentences. Presence of a virus may be confirmed.Logical formLearned from15 sentences. An outer coat may pertain-to a virus.Logical formLearned from15 sentences. Potential can be for viruses.Logical formLearned from15 sentences. A target may pertain-to a virus.Logical formLearned from15 sentences. A virus can be concentrated.Logical formLearned from15 sentences. A virus may attack a liver.Logical formLearned from15 sentences.