객관식
_________ vaccines are more capable of causing disease in a patient. However, _________ vaccines do not provide as long-lasting immunity.
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26. Applications of the Immune Response
Inactivated Vaccines
객관식
Haemophilus influenzae is an encapsulated, pathogenic bacterium which causes meningitis in infants and young children. What type of vaccine would be best to protect young children from this disease?
A
Conjugate vaccine.
B
Toxoid vaccine.
C
Attenuated vaccine.
D
Polysaccharide vaccine.
검증된 단계별 안내1
Step 1: Understand the nature of Haemophilus influenzae, which is an encapsulated bacterium. The capsule is made of polysaccharides that help the bacterium evade the immune system, making it a key target for vaccine development.
Step 2: Recognize that polysaccharide vaccines alone often do not produce a strong immune response in young children because their immune systems do not respond well to polysaccharide antigens without protein help.
Step 3: Learn that conjugate vaccines link the polysaccharide capsule to a protein carrier, which helps stimulate a stronger and longer-lasting immune response, especially in infants and young children.
Step 4: Compare other vaccine types: toxoid vaccines target bacterial toxins, attenuated vaccines use weakened live bacteria, and polysaccharide vaccines use only the capsule polysaccharides without a protein carrier. None of these are as effective for young children against encapsulated bacteria like Haemophilus influenzae.
Step 5: Conclude that the conjugate vaccine is the best choice to protect young children from Haemophilus influenzae meningitis because it effectively induces immunity by combining the polysaccharide capsule with a protein carrier.
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