Short-lived immunity acquired from mother to foetus across placenta or through mother's milk to the infant is categorised as:

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passive immunity. This is passive immunity because the antibodies come from the mother and are transferred to the baby, so the infant does not produce them. It is short-lived since these borrowed antibodies gradually break down over time.

Short-lived immunity acquired from mother to foetus across placenta or through mother's milk to the infant is categorised as:

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