Which statement best describes the outcome of schistosome immunity?

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Study for the Introduction to Parasitology Test. Use flashcards and multiple-choice questions, each question offers hints and explanations. Prepare for your exam thoroughly!

Multiple Choice

Which statement best describes the outcome of schistosome immunity?

Explanation:
Immunity to schistosomes is partial and non-sterilizing. The host can develop immune responses that reduce worm burden and egg production and may lessen disease severity, but these responses rarely prevent reinfection entirely. Schistosomes survive for years by evading clearance, coating themselves with host proteins, and releasing molecules that modulate the immune system, so adult worms can persist even in the presence of antibodies and T-cell activity. Because of this, infections can become chronic despite ongoing immune responses.

Immunity to schistosomes is partial and non-sterilizing. The host can develop immune responses that reduce worm burden and egg production and may lessen disease severity, but these responses rarely prevent reinfection entirely. Schistosomes survive for years by evading clearance, coating themselves with host proteins, and releasing molecules that modulate the immune system, so adult worms can persist even in the presence of antibodies and T-cell activity. Because of this, infections can become chronic despite ongoing immune responses.

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