Which scenario best describes naturally acquired passive immunity?

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Multiple Choice

Which scenario best describes naturally acquired passive immunity?

Naturally acquired passive immunity happens when antibodies come from another individual rather than being made by your own immune system. Here,母 maternal antibodies are passed to the fetus across the placenta during pregnancy (and later to the newborn via breast milk), giving the baby immediate protection without the baby’s immune system having to respond. This protection is temporary because those maternal antibodies eventually fade. So the scenario where immunity is transferred from mother to fetus best fits naturally acquired passive immunity. It’s different from immunity produced by your own immune system after exposure (natural active immunity) or from vaccination (artificially acquired active immunity), and it isn’t about protection from injury.

Naturally acquired passive immunity happens when antibodies come from another individual rather than being made by your own immune system. Here,母 maternal antibodies are passed to the fetus across the placenta during pregnancy (and later to the newborn via breast milk), giving the baby immediate protection without the baby’s immune system having to respond. This protection is temporary because those maternal antibodies eventually fade.

So the scenario where immunity is transferred from mother to fetus best fits naturally acquired passive immunity. It’s different from immunity produced by your own immune system after exposure (natural active immunity) or from vaccination (artificially acquired active immunity), and it isn’t about protection from injury.

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