Study Design:

This is a 2 arm non-interventional trial that will compare the occurrence of adverse drug reactions between Octagam 5% and other marketed IVIG infusion treatments.

This Post Marketing Study is a prospective, 2-armed, multicenter, non-interventional study. Patients will either be administered the brand of IGIV therapy ordered by their prescribing physician, or for patients issued unspecified or generic prescriptions of IGIV therapy, octagam® 5% or another brand of IGIV therapy will be provided by the Investigator according to federal, state and local regulations and good clinical practice (GCP) guidelines.

The primary objective is to assess and evaluate the safety profile of octagam® 5% during or after administration under routine clinical use for all labeled indications, with a special emphasis on the occurrence of TEEs. The incidence of TEEs in patients receiving octagam® 5% will be compared with the incidence rate in a matching concurrent control group of patients receiving other IGIVs for routine clinical use.

Inclusion Criteria:

1. Male and female patients aged 18 years.
2. Patients with confirmed diagnosis of Primary Humoral Immunodeficiency (PI) as stated by the World Health Organization and requiring immunoglobulinreplacement therapy due to hypogammaglobulinemia or agammaglobulinemia.
3. Patients on regular treatment (every 3 to 4 weeks) with low dose IGIV (1 g/kg) for a period of at least 6 months without changing the brand.

Exclusion Criteria:

1. Patients with a history of TEEs within the previous 24 months.
2. Patients with a regular treatment frequency of more than once every 3 to 4 weeks.

Patients over 18 years old with Primary Immune Deficiency Syndrome PID receiving marketed IVIG as treatment