In which pregnancy category are almost all vaccines?
1. C
2. X
3. D
4. B
Correct Answer: 1
Rationale 1: Most vaccines are pregnancy category C drugs.
Rationale 2: Pregnancy category X indicates a direct link to fetal abnormalities, and this is not true for vaccines.
Rationale 3: Pregnancy category D refers to drugs that promote greater fetal risk than that caused by vaccines.
Rationale 4: Pregnancy category B refers to drugs that promote less fetal risk than do the vaccines.
Global Rationale: Although most vaccines are pregnancy category C, vaccinations are sometimes delayed in pregnant patients until after delivery to avoid any potential harm to the fetus. Pregnancy category X indicates a direct link to fetal abnormalities, and this is not true for vaccines. Pregnancy category D refers to drugs that promote greater fetal risk than that caused by vaccines. Pregnancy category B refers to drugs that promote less fetal risk than do the vaccines.
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