A (life cycle) may pertain-to a virus.Logical formLearned from27 sentences. Stocks can be constituted-of-or-filled-with virus.Logical formLearned from27 sentences. A virus can be resistant.Logical formLearned from27 sentences. A virus can be identified.Logical formLearned from27 sentences. Viruses may be released.Logical formLearned from27 sentences. Variants can be constituted-of-or-filled-with viruses.Logical formLearned from27 sentences. Protection can be from viruses.Logical formLearned from27 sentences. Versions may pertain-to a virus.Logical formLearned from27 sentences. An avian-flu virus can be in a form.Logical formLearned from27 sentences. A role may pertain-to a virus.Logical formLearned from27 sentences. Viruses can be interchangeable with bacteria.Logical formLearned from27 sentences. Viruses may work.Logical formLearned from27 sentences. A vaccine may be made against an avian-flu virus.Logical formLearned from27 sentences. A recurrence may pertain-to a virus.Logical formLearned from27 sentences. Viruses can be benign.Logical formLearned from27 sentences.