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Aplastic anemia has multiple causes. Some of these causes are idiopathic, meaning they occur sporadically for no known reason. Other causes are secondary, resulting from a previous illness or disorder. Acquired causes, however, may include the following:
History of specific infectious diseases such as hepatitis, Epstein-Barr virus (EBV), cytomegalovirus (CMV), parvovirus B19, or human immunodeficiency virus (HIV)
History of taking certain medications, such as antibiotics and anticonvulsants
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