Which vaccine is described as being 20 times more concentrated than the chickenpox vaccine used in children and reduces disease in adults 60 and older?

• A. Pneumococcal vaccine
• B. Shingles vaccine
• C. Hepatitis B vaccine
• D. Influenza vaccine

Answer: (B)

The concept being tested is how vaccines for older adults are formulated to overcome waning immunity and effectively prevent disease. The shingles vaccine is designed with a much higher antigen content compared to the varicella (chickenpox) vaccine given to children, and it uses an immune-boosting approach to create stronger protection in people 60 and older. This higher concentration helps reduce the risk of herpes zoster (shingles) and its complications, such as postherpetic neuralgia, in that age group. Other vaccines listed target different diseases (pneumococcal, influenza, hepatitis B) and are not described as having this higher concentration tailored for older adults.