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Human T-cell leukemia virus, type 2 (HTLV-2) is a retroviral infection that affect the T cells (a type of white blood cell). Although this virus generally causes no signs or symptoms, scientists suspect that some affected people may later develop neurological problems and/or chronic lung infections. HTLV-2 is spread by blood transfusions, sexual contact and sharing needles. It can also be spread from mother to child during birth or breast-feeding.[7945][7946] There is no cure or treatment for HTLV-2 and it is considered a lifelong condition; however, most infected people remain asymptomatic (show no symptoms) throughout life.[7946]
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