VaccZyme Human Anti-Haemophilus influenza type b Enzyme Immunoassay Kit For in vitro diagnostic use, Product Code: MK016 - Product Usage: This assay is designed for the in vitro measurement of specific IgG antibodies against Haemophilus influenzae type b (Hib) capsular polysaccharide, present in human serum. Sufficient materials are supplied to allow a maximum of 41 samples to be tested in duplicate, with a calibration curve and two controls.

A deterioration of performance was identified with influenza type B Enzyme Immunoassay Kits with findings of a positive bias with kit controls. Patient sample results may be affected with falsely elevated results incorrectly indicating a protective level of anti-Hib antibody in the assessment of immunodeficiency.

On XXX, an Urgent Field Safety Notice was sent via email to customers. Customers are instructed to discontinue using this product immediately; dispose of any remaining product at your facility following local regulations; discuss this information with your medical director so that the potential impact of the issue is considered on a local level; and to return the completed and signed E-Back form TSWS18 to [email protected] or to your local firm representative within one week of receiving this notification. Customers are also requested to include a witness signature for the kit disposal as this is required on the E-Back form. Customers with additional questions were encouraged to email [email protected].