Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.

Q: A 25-year-old man with a history of mid-borderline (BB) Hansen's disease developing a reversal reaction after starting dapsone and rifampin therapy is presented.

A: adverse drug event
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Q: A 53 year old Greenlandic male was admitted twice over a period of 4 years with a new complete right bundle branch block after ingestion of 10 g and 4 g of carbamazepine respectively.

A: adverse drug event
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Q: We report a case of Zidovudine induced anaemia and bone marrow aplasia in a patient infected with HIV.

A:
adverse drug event
****