Measles may be caused by a virus.Logical formLearned from12 sentences. A virus can be during (blood transfusions).Logical formLearned from12 sentences. A virus may cause diarrhea.Logical formLearned from12 sentences. A virus may sap a strength.Logical formLearned from12 sentences. A (bird flu virus) may kill humans.Logical formLearned from12 sentences. A (flu virus) may shift to a strain.Logical formLearned from12 sentences. A case may involve a virus.Logical formLearned from12 sentences. A virus can be endemic in poultry.Logical formLearned from12 sentences. A virus may be found in samples.Logical formLearned from12 sentences. A virus may morph into a form.Logical formLearned from12 sentences. Animals may be infected with a virus.Logical formLearned from12 sentences. An infection can be with a virus.Logical formLearned from12 sentences. Persons may be affected by a virus.Logical formLearned from12 sentences. Persons may see a virus.Logical formLearned from12 sentences. A strength may pertain-to a virus.Logical formLearned from12 sentences.