Bacteriology USMLE Step 1 Practice Question
A 7-year-old boy presents for routine health maintenance with vital signs BP 110/70 mmHg, HR 88/min, RR 20/min, temperature 37.2°C, and SpO2 98% on room air. He receives a booster vaccination. Serum IgG levels are normal. He denies recent respiratory or gastrointestinal symptoms. The vaccine selected induces protective antibodies against a bacterial toxin rather than the organism itself. Which of the following vaccines uses this toxoid-based strategy?
Answer choices
- AMeasles vaccine
- BPneumococcal conjugate vaccine
- CTetanus vaccineCorrect answer
- DInactivated polio vaccine
- EHepatitis B vaccine
- FDiphtheria toxoid vaccine
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