A virus may escape.Logical formLearned from32 sentences. A dna may pertain-to a virus.Logical formLearned from32 sentences. A behavior may pertain-to a virus.Logical formLearned from32 sentences. Characteristics may pertain-to a virus.Logical formLearned from32 sentences. A virus can be pathogenic.Logical formLearned from32 sentences. A (h5n1 bird flu virus) can be deadly.Logical formLearned from32 sentences. Cases may pertain-to a (bird flu virus).Logical formLearned from32 sentences. Concerns can be about a virus.Logical formLearned from32 sentences. A toll can be from a virus.Logical formLearned from32 sentences. Birds may be infected with a virus.Logical formLearned from31 sentences. A (virus protection) can be up-to-date.Logical formLearned from31 sentences. A genetic test can be for a (flu virus).Logical formLearned from31 sentences. Some virus may be detected by a (pattern file).Logical formLearned from31 sentences. A person may have virus.Logical formLearned from31 sentences. A virus may destroy cells.Logical formLearned from31 sentences.