Babies begin to develop their own immunity around two to three months old. However, they receive passive immunity before and after birth, offering some initial protection.
Here's a breakdown of how a baby's immune system develops:
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Passive Immunity from the Mother:
- During Pregnancy: Antibodies are passed from the mother to the baby through the placenta, providing immediate protection against illnesses the mother is immune to.
- After Birth: Breastfeeding continues to provide antibodies and other immune factors that boost the baby's defenses. This is why breast milk is highly recommended.
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Developing Their Own Immune System:
- An infant's immune system isn't fully mature at birth. It gradually develops as the baby is exposed to new microbes and antigens in the environment. This is a natural process that helps build their own immunity.
- Around two to three months, babies start producing their own antibodies more effectively. This is a crucial stage in immune system development.
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Importance of Vaccinations:
- Vaccinations play a vital role in helping babies develop immunity to specific diseases. They introduce weakened or inactive forms of pathogens, stimulating the immune system to produce antibodies without causing illness.
- Following the recommended vaccination schedule is crucial for protecting babies from potentially serious infections.
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Key Considerations:
- Even after two to three months, a baby's immune system is still developing and maturing.
- Continue to practice good hygiene, such as frequent handwashing, to minimize the baby's exposure to germs.
- Consult with your pediatrician about any concerns you have regarding your baby's immune system.
In summary, while babies receive passive immunity from their mothers, they begin actively developing their own immunity around two to three months of age, a process significantly aided by vaccinations.
