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Passive Immunity & Breastfeeding | Biology for GCSE/IGCSE - Year 11 PDF Download

Passive Immunity & Breastfeeding

  • Passive immunity provides swift but transient protection against a pathogen through the acquisition of antibodies from another individual.
  • One significant source of passive immunity is the transfer of antibodies from a mother to her infant via breast milk. This mechanism is crucial for bolstering the immunity of newborns, offering them defense against infections until their immune systems mature and become more robust.
  • Unlike active immunity, where the body generates its own antibodies and memory cells, passive immunity relies solely on the uptake of ready-made antibodies, hence the term "passive."

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FAQs on Passive Immunity & Breastfeeding - Biology for GCSE/IGCSE - Year 11

1. How does breastfeeding provide passive immunity to infants?
Ans. Breast milk contains antibodies passed on from the mother, providing the infant with temporary immunity against certain diseases.
2. Can passive immunity obtained through breastfeeding protect infants from all illnesses?
Ans. While breastfeeding can provide some protection against certain diseases, it may not protect against all illnesses, and vaccination is still recommended for complete immunity.
3. How long does passive immunity from breastfeeding last in infants?
Ans. Passive immunity obtained through breastfeeding typically lasts for the duration of breastfeeding, as long as the infant continues to receive breast milk.
4. Is passive immunity through breastfeeding the same as getting vaccinated?
Ans. Passive immunity through breastfeeding is different from vaccination, as it provides temporary protection from antibodies in breast milk, whereas vaccination stimulates the immune system to produce its own antibodies.
5. Can mothers pass on illnesses to their infants through breastfeeding?
Ans. While rare, mothers can potentially pass on illnesses to their infants through breastfeeding if they are infected with certain diseases. It is important for mothers to practice proper hygiene and seek medical advice if they are ill.
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