Abstract
In Pakistan, dengue viral infection has become hyper-endemic. Renal transplantation is also expanding. We aimed to study dengue in renal transplant recipients (RTR). We conducted a study of RTR reported to be anti-dengue immunoglobulin-M antibody positive from January 2009 to December 2010 at our institution in Karachi and follow their clinical course and outcome. Median age was 28years; 75 (73.7%) were males. Clinical presentation included fever in 82 (80.4%), gastrointestinal symptoms in 35 (34.3%), hemorrhagic complications in 9 (8.8%), and thrombocytopenia in 97 (95%), which was of >15days duration in 24%. Fever was seen less frequently in patients on high-dose (>7.5mg) steroids as compared with low-dose (≤7.5mg) steroids. Forty-four patients (43%) had primary and 58 (56.8%) had secondary dengue infection. Dengue fever (DF) occurred in 90 (88%), and dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS) occurred in 12 (11.7%). DHF/DSS was seen in 3 (6.8%) of those with primary and in 9 (15.5%) of those with secondary infection (P<0.22). In secondary infection, patients on cyclosporine-containing regimen had less severe disease, with DHF/DSS in 22% as opposed to DF in 59% (P<0.04). Of 102 RTR, 68 (66.7%) had graft dysfunction, 5 of whom died. Of the remaining 63, in 54 patients (85.7%) creatinine returned to baseline by an average of 12.6days. Of 102 patients, 95 (93%) recovered and 7 (6.9%) died, 6 of whom had bacteremia with sepsis and 1 had respiratory failure. None died due to dengue infection alone. In conclusion, in RTR without life-threatening co-morbidities, the clinical course of dengue infection is mild, with good recovery and preserved renal function.
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