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A newborn infant has immunity from their mother. Which type of immunity is it?

A.

Naturally acquired active immunity

B.

Artificially acquired passive immunity

C.

Naturally acquired passive immunity

D.

Artificially acquired active immunity

Answer and Explanation

The Correct Answer is C

A. Naturally acquired active immunity

  This results from infection and the body’s own immune response—not applicable to newborns.

B. Artificially acquired passive immunity

  This comes from injection of antibodies (e.g., immunoglobulins)—not from the mother.

C. Naturally acquired passive immunity

    This is passed from mother to child through the placenta (IgG antibodies) and via breast milk (IgA).

D. Artificially acquired active immunity

  This comes from vaccines that stimulate the body to produce its own antibodies.


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Related Questions

Correct Answer is A

Explanation

A. Shingles

Shingles (herpes zoster) occurs when the varicella-zoster virus reactivates from latency in nerve ganglia, typically many years after initial infection with chickenpox.

B. Measles

Measles is caused by the rubeola virus and is not related to herpes varicella zoster.

C. Smallpox

Smallpox is caused by the variola virus, which is entirely different from the herpesvirus group.

D. Mumps

Mumps is caused by a paramyxovirus and is unrelated to varicella-zoster.

Correct Answer is A

Explanation

A. RBCs:

Red blood cells (RBCs) carry oxygen and have no role in the immune response.

B. T cells:

T cells are classified into subsets like cytotoxic (killer), helper, memory, and suppressor (regulatory) T cells, each with specialized immune functions.

C. B cells:

While B cells also have memory capabilities and produce antibodies, they are not categorized into killer or suppressor types.

D. Platelets:

Platelets are involved in blood clotting, not immunity.

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