Match each pediatric infectious disease exposure scenario with the single most appropriate post-exposure prophylaxis (PEP) or management step.
- A 9-month-old infant is evaluated after being exposed to a confirmed case of measles 4 days ago. The infant is currently asymptomatic.Intramuscular administration of standard human immune globulin (IG).
- A 10-day-old term neonate is evaluated in the clinic because the mother developed a diffuse, pruritic, vesicular rash 2 days after delivery.Administration of varicella-zoster immune globulin (VZIG).
- A 4-year-old fully immunized child is evaluated because their 6-month-old unimmunized sibling was hospitalized yesterday with invasive Haemophilus influenzae type b (Hib) meningitis.Oral administration of rifampin for 4 days.
- A 3-week-old healthy neonate is brought to the clinic because the patient's 5-year-old sibling was recently diagnosed with laboratory-confirmed pertussis.Initiation of a 5-day course of oral azithromycin.
Answer
Measles exposure at 4 days requires immune globulin; Peripartum maternal varicella requires VZIG; Hib exposure with an unimmunized infant in the household requires rifampin; Pertussis exposure in a neonate requires azithromycin.
Each specific post-exposure scenario requires a tailored prophylactic intervention based on patient age, timing of exposure, immune status of household contacts, and drug safety profiles. Measles exposure past 72 hours requires immune globulin. Peripartum varicella requires VZIG to prevent fatal neonatal disease. Hib carriage eradication with rifampin is necessary to protect unimmunized household infants. Pertussis PEP requires a macrolide, with azithromycin being the safest for neonates.
Step-by-Step Solution
Key Concept
Pediatric Post-Exposure Prophylaxis (PEP) Guidelines
Estimated Time:2m 30s