• S L Roy, R Metzger, J G Chen, F R Laham, M Martin, S W Kipper, L E Smith, G M Lyon, J Haffner, J E Ross, A K Rye, W Johnson, D Bodager, M Friedman, D J Walsh, C Collins, B Inman, B J Davis, T Robinson, C Paddock, S R Zaki, M Kuehnert, A DaSilva, Y Qvarnstrom, R Sriram, and G S Visvesvara.
• Centers for Disease Control and Prevention, Atlanta, GA.
• Am. J. Transplant. 2014 Jan 1; 14 (1): 163-71.

AbstractPrimary amebic meningoencephalitis (PAM) caused by the free-living ameba (FLA) Naegleria fowleri is a rare but rapidly fatal disease of the central nervous system (CNS) affecting predominantly young, previously healthy persons. No effective chemotherapeutic prophylaxis or treatment has been identified. Recently, three transplant-associated clusters of encephalitis caused by another FLA, Balamuthia mandrillaris, have occurred, prompting questions regarding the suitability of extra-CNS solid organ transplantation from donors with PAM. During 1995-2012, 21 transplant recipients of solid organs donated by five patients with fatal cases of PAM were reported in the United States. None of the recipients developed PAM, and several recipients tested negative for N. fowleri by serology. However, historical PAM case reports and animal experiments with N. fowleri, combined with new postmortem findings from four patients with PAM, suggest that extra-CNS dissemination of N. fowleri can occur and might pose a risk for disease transmission via transplantation. The risks of transplantation with an organ possibly harboring N. fowleri should be carefully weighed for each individual recipient against the potentially greater risk of delaying transplantation while waiting for another suitable organ. In this article, we present a case series and review existing data to inform such risk assessments.© Copyright 2013 The American Society of Transplantation and the American Society of Transplant Surgeons.

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