Match each pediatric clinical scenario involving an infectious disease exposure or risk with the most appropriate preventive management step.
- A 1-day-old newborn delivered at term to a mother whose hepatitis B surface antigen (HBsAg) status is positive.Administer the hepatitis B vaccine and hepatitis B immune globulin (HBIG) within 12 hours of birth.
- An unimmunized 5-year-old child who was exposed to a classmate with chickenpox 3 days ago.Administer the varicella vaccine immediately for post-exposure prophylaxis.
- A 4-week-old infant whose older sibling was recently diagnosed with a confirmed Bordetella pertussis infection.Prescribe a prophylactic course of a macrolide antibiotic (e.g., azithromycin).
- An 8-month-old infant whose family is traveling next week to a country experiencing an active measles outbreak.Administer an early dose of the measles-mumps-rubella (MMR) vaccine, which will not count toward the routine series.
Answer
The scenarios correctly match as follows: The newborn exposed to Hepatitis B requires both the Hepatitis B vaccine and HBIG; the unimmunized 5-year-old exposed to chickenpox receives the varicella vaccine for post-exposure prophylaxis; the 4-week-old exposed to pertussis requires macrolide antibiotic prophylaxis; and the 8-month-old traveling to a measles-endemic area requires an early, non-counting MMR dose.
Each clinical scenario requires a specific, guideline-directed preventive measure based on the patient's age, exposure type, and immunization status. Hepatitis B perinatal exposure requires active and passive immunity (Vaccine + HBIG). Varicella exposure in unimmunized, immunocompetent children over 1 year of age is managed with the varicella vaccine. Pertussis exposure necessitates macrolide prophylaxis for all household contacts. International travel for infants 6-11 months of age requires an early MMR dose to provide immediate, albeit temporary, protection.
Step-by-Step Solution
Key Concept
Post-exposure prophylaxis and specialized preventive immunization strategies in pediatric populations.
Estimated Time:1m 0s