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In this study a sero-epidemiological investigation on 127 renal allograft recipients was examined. In these patients, treated with Cyclosporine A or conventional drugs, antibody response to various antigens (Cytomegalovirus, Herpes simplex, Varicellae/Zoster and Mycoplasma pneumoniae) was examined. The data were compared to the healthy population and dialyzed subjects.

Since infections represent one of the greatest complications in immunocompromised hosts, our group, concerned with bacteriological monitoring, has applied its attention to microorganisms such as Pseudomonas sp, Staphylococcus sp and Candida sp. Pseudomonas sp strains have been identified using conventional techniques and the API system 20 NE. According to Varaldo's scheme, Staphylococci sp have been divided into six "lyogroup" and then, the typing of Candida sp has been checked by cultural and biochemical tests. The results obtained have demonstrated that the Pseudomonas aeruginosa species is prevalent not only in the urinary tract but also in the respiratory tract. As for the Staphylococci sp, the VI lyogroup showed the greatest percentage of strains and than, as regards Candida sp it has been possible to observe that, over a given period, the percentage of pluricontamination has been almost constant.