01822nas a2200169   4500008004100000020001400041024001700055245007600072210006900148260001100217520128300228100002301511700002301534700002401557700002201581856004901603       2015                        eng d  a1537-2995  awdn, 041736000aTransfusion-transmitted anaplasmosis from a leukoreduced platelet pool.0 aTransfusiontransmitted anaplasmosis from a leukoreduced platelet  c2015//3 aBACKGROUND: Human granulocytic anaplasmosis is an emerging tick-borne illness. Anaplasma phagocytophilum resides intracellularly, can cause asymptomatic infection, and can survive blood component refrigeration conditions for at least 18 days. To date, eight cases of transfusion-transmitted anaplasmosis (TTA) have been reported: seven attributed to red blood cell (RBC) units, five of which were prestorage leukoreduced using RBC leukoreduction filters, and one involving a process leukoreduced apheresis platelet (PLT) unit. Here, we report a case of TTA from a whole blood-derived PLT pool., STUDY DESIGN AND METHODS: Donation segments from the 7 units of RBCs and two PLT pools transfused were examined. Fast protocol multiplex real-time A. phagocytophilum polymerase chain reaction (PCR) and serologic testing for immunoglobulin (Ig)M and IgG antibodies to A. phagocytophilum by enzyme immunoassay were performed., RESULTS: Transmission was confirmed by positive A. phagocytophilum PCR and serology in one of 16 donors and by positive PCR and seroconversion in the recipient., CONCLUSION: This is the first confirmed case of TTA from a whole blood-derived PLT pool prepared from PLT concentrates leukoreduced by in-line filtration of PLT-rich plasma.Copyright © 2015 AABB.1 aFine, Antonella, B1 aSweeney, Joseph, D1 aNixon, Christian, P1 aKnoll, Bettina, M  uhttps://www.notifylibrary.org/reference/4545