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  • Title: Prevention of herpes simplex virus (HSV) infection in recipients of HLA-matched T-lymphocyte-depleted bone marrow allografts.
    Author: Engelhard D, Morag A, Or R, Naparstek E, Cividalli G, Ruchlemer R, Aker M, Maayan S, Slavin S.
    Journal: Isr J Med Sci; 1988 Mar; 24(3):145-50. PubMed ID: 3286577.
    Abstract:
    The occurrence of HSV infection and the effect of prophylaxis with oral acyclovir were evaluated prospectively in 34 consecutive patients undergoing bone marrow transplantation (BMT). All allogeneic BMT procedures involved T-lymphocyte depletion for prevention of graft-vs.-host disease (GVHD). Five HSV-seronegative patients did not receive acyclovir, and they did not develop HSV infection. Oral acyclovir was administered to 15 HSV-seropositive BMT recipients; 14 untreated HSV-seropositive BMT recipients served as a control group. The adult dose of acyclovir was 400 mg three times a day on Days -6 to +14 and 200 mg three times a day on Days +15 to +90. Children received 500 mg/m2 per day divided into three equal doses on Days -6 to +14 and 250 mg/m2 per day again divided into three on Days +15 to +90. In the group on prophylaxis, only one developed HSV infection during the time prior to engraftment. In the reference group, 12 of 14 (85.7%) developed oral HSV infection within 0 to 16 days (median 11 days) after the transplantation. Time for engraftment (duration of neutropenia) was shorter in patients receiving acyclovir. After engraftment, HSV infection was not observed during administration or following discontinuation of acyclovir on Day 90, but occurred in three patients in whom acyclovir was discontinued on Days 25, 35 and 40 after BMT. In the untreated group, two patients had recurrence of HSV infection on Days 40 to 60, and one had two infectious episodes. GVHD occurred in only two recipients, neither of whom had HSV infection. We conclude that the incidence of HSV infection during the period until engraftment in recipients of T-lymphocyte-depleted BMT is high, similar to that reported by others in recipients of whole BMT. Relatively low-dose oral acyclovir administered for 90 days can effectively prevent HSV infections in previously HSV-seropositive BMT recipients and may also shorten the period until engraftment.
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