infection , attributable to immunosuppression , was a common finding and consisted of extensive pneumonia , usually due to klebsiella aerogenes and pseudomonas aeruginosa ( 38,8 % ) , herpesvirus infection ( 38,8 % ) , cytomegalic virus infection ( 37,5 % ) , aspergillosis and other opportunistic infections .
C0009450
infection
C0042769
virus infection