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Which of the following vaccines is recommended for infants at 2 months of age to protect against whooping cough (pertussis)?

A.

MMR (measles, mumps, rubella) vaccine

B.

Hepatitis B vaccine

C.

DTaP (diphtheria, tetanus, acellular pertussis) vaccine

D.

Varicella (chickenpox) vaccine

Answer and Explanation

The Correct Answer is C

Explanation: At 2 months of age, infants are recommended to receive the DTaP vaccine, which protects against diphtheria, tetanus, and pertussis (whooping cough). The MMR vaccine protects against measles, mumps, and rubella and is usually administered at a later age. The hepatitis B vaccine is given shortly after birth, and the varicella vaccine is typically administered at 12 months of age.

Incorrect choices:

a. The MMR vaccine protects against measles, mumps, and rubella, not whooping cough (pertussis).

b. The hepatitis B vaccine is typically given shortly after birth, not at 2 months of age.

d. The varicella vaccine is usually administered at 12 months of age, not at 2 months.


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Related Questions

Correct Answer is B

Explanation

Explanation: Numerous scientific studies have found no link between vaccines and autism. The notion that vaccines cause autism was based on a discredited and fraudulent study, and subsequent research has shown no evidence of such a link.

Correct Answer is C

Explanation

Explanation: Hormones are chemical messengers produced by the endocrine system to regulate various physiological processes in the body. While the endocrine system and immune system can influence each other's activities, hormones are not considered a direct component of the immune system.

Incorrect choices:

a. Lymphocytes are a type of white blood cell and a critical component of the immune system. They include B cells, T cells, and natural killer cells, which play essential roles in immune responses.

b. Antigens are molecules or substances that can trigger an immune response in the body. They are recognized by the immune system as foreign or non-self and can elicit the production of antibodies.

d. Antibodies are proteins produced by B cells in response to the presence of antigens. They play a vital role in recognizing and neutralizing foreign substances in the body.

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