Demographic characteristics of the study population in a case control study of risk factors for non-pregnancy associated listeriosis in Germany, 2012–2013.

a mutual exclusive categories
b diabetes, renal disease, liver disease, autoimmune disorder, hematological cancer (within last 5 years), solid organ transplantation and/or splenectomy
c chemotherapy, radiation therapy, hemodialysis and/or immunosuppressive medication (all within the last 3 months)
* χ2 test
Demographic characteristics of the study population in a case control study of risk factors for non-pregnancy associated listeriosis in Germany, 2012–2013.