A refusal can be virulent.Logical formLearned from2 sentences. A cowpox can be virulent.Logical formLearned from2 sentences. Sub-strains can be virulent.Logical formLearned from2 sentences. An open letter can be virulent.Logical formLearned from2 sentences. A strain of pneumoniaes may be made virulent.Logical formLearned from2 sentences. Bacteriophages can be virulent.Logical formLearned from2 sentences. (Reference strains) can be virulent.Logical formLearned from2 sentences. Mosquitoes can be virulent.Logical formLearned from2 sentences. Strains can be virulent to neurons.Logical formLearned from2 sentences. A libel can be virulent.Logical formLearned from2 sentences. A streak can be virulent.Logical formLearned from2 sentences. Symbionts can be virulent.Logical formLearned from2 sentences. Tularensis can be virulent.Logical formLearned from2 sentences. A regime can be virulent.Logical formLearned from2 sentences. Weeds can be virulent.Logical formLearned from2 sentences.