This tool supports structured infectious-disease decision making but does not replace clinician judgement or local guideline pathways.
This OpiCalc infectious-disease entry reflects commonly used guideline criteria and bedside risk features used in contemporary clinical practice.
VZIG Eligibility: Assess eligibility for varicella-zoster immune globulin after significant exposure.
Non-immune or uncertain immunity
+2 Points
Pregnant
Immunocompromised
Neonate / preterm infant risk scenario
Exposure within the prophylaxis window
+1 Points
Significant close-contact exposure
Assessment Tier
Score 0
Routine VZIG is less likely to be indicated.