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Zorluk: ZorPreventive Care and Immunizations

A 15-year-old girl is brought to the clinic by her adoptive parents for an initial health evaluation. She was recently adopted from a developing country and has no available medical or immunization records. The patient has a known history of perinatally acquired HIV infection but has not consistently taken antiretroviral therapy in the past year. She has no acute complaints today and feels well. Her temperature is 37.1°C (98.8°F), blood pressure is 110/70 mm Hg, pulse is 82/min, and respirations are 14/min. Physical examination reveals mild generalized cervical and axillary lymphadenopathy but is otherwise unremarkable. Laboratory studies show an absolute CD4 T-lymphocyte count of 120 cells/mm³ (8% of total lymphocytes) and an HIV viral load of 150,000 copies/mL. Which of the following is the most appropriate immunization plan for this patient today?

  1. A
    Administer all age-appropriate catch-up vaccines, including MMR and varicella, because her CD4 count is greater than 100 cells/mm³
  2. B
    Administer the indicated inactivated vaccines along with the live-attenuated influenza vaccine (LAIV) to provide optimal mucosal immunity
  3. Administer Tdap, IPV, hepatitis B, MenACWY, HPV, and pneumococcal vaccines; withhold all live-attenuated vaccinesCevap
  4. D
    Administer the indicated inactivated vaccines along with the varicella vaccine, as it is a recombinant product safe for immunocompromised patients
  5. E
    Administer MMR and varicella vaccines immediately to prevent highly contagious infections, and delay inactivated vaccines to avoid immune overload

Cevap

The correct action is to administer Tdap, IPV, hepatitis B, MenACWY, HPV, and pneumococcal vaccines, and to withhold all live-attenuated vaccines.
This patient requires a complete catch-up immunization series due to her lack of records. As an adolescent with HIV and severe immunosuppression (CD4 count < 200 cells/mm³ and < 15%), she can and should safely receive all age-appropriate inactivated, toxoid, and recombinant vaccines (Tdap, IPV, hepatitis B, MenACWY, HPV, and pneumococcal). However, live-attenuated vaccines (such as MMR, varicella, and LAIV) are strictly contraindicated due to the high risk of unchecked viral replication resulting in disseminated disease.

Adım Adım Çözüm

1
Evaluate the patient's degree of immunosuppression based on age and CD4 count.
The patient is 15 years old with a CD4 count of 120 cells/mm³ and 8%.
Immunization guidelines for HIV-positive patients depend heavily on the severity of immunosuppression.
2
Apply the CDC threshold for severe immunosuppression in adolescents.
Severe immunosuppression is defined as a CD4 count < 200 cells/mm³ or < 15%. This patient meets the criteria.
This threshold dictates absolute contraindications for live-attenuated vaccines due to the risk of disseminated infection.
3
Select appropriate catch-up vaccines for a 15-year-old with unknown records.
Inactivated and recombinant vaccines (Tdap, IPV, HepB, MenACWY, HPV, Pneumococcal) are indicated and safe. Live vaccines (MMR, Varicella, LAIV) must be withheld.
Inactivated vaccines cannot replicate and are safe for immunocompromised hosts, whereas live vaccines pose a life-threatening risk.

Anahtar Kavram

Administration of live-attenuated vaccines is strictly contraindicated in patients with severe immunosuppression, defined in adolescents and adults with HIV as a CD4 count < 200 cells/mm³ or < 15%.
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Preventive Care and Immunizations

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