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A 30-year-old female asked:

Can a baby have a good immune system from birth?

2 doctor answers3 doctors weighed in
Dr. Robert Kwok
Pediatrics 34 years experience
Good meaning Normal: Sure, all normal newborns have good immune systems, meaning all normal babies have normal immune systems... for a baby. Likewise, normal newborns have normal vision... for a new baby. It's all a matter of perspective.
Dr. James Ferguson
Pediatrics 47 years experience
Basics: At birth a baby has 2 types of basic immune defenses. One is the transient immunity from antibodies transferred from the mother during pregnancy. These antibodies last for several months & are critical to protection until the babies immune system "wakes up". The 2nd is the immune system defined by the inherited systems of the baby. Good nutrition, vaccines and nurturing enhance it.

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A 45-year-old member asked:

When does a baby's immune system develop?

1 doctor answer5 doctors weighed in
Dr. Steven Machtinger
Allergy and Immunology 45 years experience
In utero: The immune system develops in the fetus and is functioning at birth. Passive maternal protection is provided by transfer of antibodies across the placenta and in the breast milk. The developing immune system reaches mature functioning sometime in the second year of life.

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Last updated Dec 4, 2019

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