High prevalence of renal transplant recipients infected with more than one cytomegalovirus glycoprotein B genotype.

A prospective analysis of cytomegalovirus (CMV) glycoprotein B (gB) genotypes was conducted on 34 renal transplant recipients using peripheral blood leukocytes (PBLs) and urine specimens. The CMV gB genotypes were analyzed by polymerase chain reaction (PCR) followed by enzyme digestion. PBLs and urine samples showed almost equal proportions of the 4 known gB genotypes, as well as equal proportions of gB genotype mixtures. The gB genotypes 1, 2 and 3 were equally distributed in the patients. Twenty-four (70.6%) patients had more than one gB genotype during follow-up. There was no association of gB genotypes with the development of symptomatic CMV infection.