A case-control study comprised 130 cases affected by chronic lymphocytic leukemia and the same number of individually matched controls, with accidental injuries as a cause of hospitalization. Matching criteria were: sex, age, type of settlement, and area of residence. Both leukemias and all cancers were more frequent among family members of cases, as compared to controls.
Although the incidence rate of hospital infections is low, it is necessary to maintain continuous surveillance of surgical site infections and to implement the preventive measures.
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