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Difficulty: Very hardPreventive Care and Screening

A 34-year-old primigravida at 34 weeks gestation comes to the clinic in early November for a routine prenatal visit. Her pregnancy has been uncomplicated. Her past medical history is notable only for a severe egg allergy; she experienced anaphylaxis requiring epinephrine and a brief intensive care unit admission after eating eggs at age 10, and she has strictly avoided eggs since. She has not received any vaccinations during the current pregnancy. Her only medication is a daily prenatal vitamin. Vital signs are within normal limits. Which of the following is the most appropriate immunization management for this patient today?

  1. Administer Tdap, standard inactivated influenza vaccine, and maternal respiratory syncytial virus vaccineAnswer
  2. B
    Administer Tdap and maternal respiratory syncytial virus vaccine, and withhold the influenza vaccine
  3. C
    Administer Tdap and standard inactivated influenza vaccine, and administer nirsevimab to the patient
  4. D
    Administer standard inactivated influenza vaccine and maternal respiratory syncytial virus vaccine, and delay Tdap until the postpartum period
  5. E
    Administer Tdap and standard inactivated influenza vaccine, and delay the maternal respiratory syncytial virus vaccine until 38 weeks gestation

Answer

The correct answer is to administer Tdap, the standard inactivated influenza vaccine, and the maternal respiratory syncytial virus (RSV) vaccine during today's visit.
The correct approach is to administer all three vaccines during this visit. Tdap is recommended during every pregnancy between 27 and 36 weeks gestation to provide the newborn with passive immunity against pertussis. The maternal respiratory syncytial virus (RSV) vaccine is recommended for pregnant individuals between 32 and 36 weeks gestation specifically during the RSV season (September through January). Finally, the influenza vaccine is recommended for all pregnant individuals. Notably, current guidelines emphasize that a history of egg allergy, even anaphylaxis, is no longer a contraindication to receiving any licensed, age-appropriate influenza vaccine, including standard egg-based inactivated vaccines.

Step-by-Step Solution

1
Evaluate the patient's gestational age and current season to determine vaccine eligibility.
The patient is at 34 weeks gestation in early November.
Gestational age and season are critical for determining the timing of time-sensitive maternal vaccines like Tdap and RSV.
2
Assess the indication for the respiratory syncytial virus (RSV) vaccine.
The maternal RSV vaccine is indicated today.
The maternal RSV vaccine is recommended strictly between 32 and 36 weeks gestation during the months of September through January.
3
Assess the indication for the Tdap vaccine.
The Tdap vaccine is indicated today.
Tdap is universally recommended during every pregnancy, optimally between 27 and 36 weeks gestation, to maximize transplacental transfer of pertussis antibodies.
4
Evaluate the influenza vaccine indication in the context of the patient's severe egg allergy.
The standard inactivated influenza vaccine is indicated without any additional precautions.
Current guidelines state that an egg allergy of any severity is no longer a contraindication to standard egg-based influenza vaccines; pregnancy is a strong indication for the flu shot.

Key Concept

Immunization schedules and exact gestational timing for pregnant patients, specifically the concurrent administration of Tdap, seasonal influenza, and seasonal maternal RSV vaccines.
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Topics

Preventive Care and Screening

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