Managing exposure to chickenpox during pregnancy. New program
G Inocencion1, R Loebstein, A Lalkin
1Hospital for Sick Children, Toronto.
Summary
Pregnant patients exposed to chickenpox should confirm immunity with a rapid test. If immunity is uncertain or testing is impossible, administer varicella zoster immunoglobulin within 96 hours to prevent complications.
Area of Science:
- Obstetrics and Gynecology
- Infectious Diseases
- Immunology
Background:
- Pregnant individuals exposed to chickenpox (varicella-zoster virus) require clear management guidelines.
- Childhood history of chickenpox does not reliably indicate adult immunity.
- Varicella-zoster virus infection during pregnancy poses risks to both mother and fetus.
Purpose of the Study:
- To provide a clear recommendation for managing pregnant patients exposed to chickenpox.
- To outline diagnostic and therapeutic strategies for varicella-zoster virus exposure in pregnancy.
Main Methods:
- Review of current clinical recommendations and guidelines for varicella-zoster virus exposure in pregnancy.
- Discussion of diagnostic testing options, including rapid serological assays.
- Evaluation of post-exposure prophylaxis with varicella zoster immunoglobulin.
Main Results:
- Maternal history of chickenpox is an unreliable indicator of immunity.
- Rapid latex agglutination testing can accurately assess varicella-zoster virus immunity.
- Varicella zoster immunoglobulin is effective when administered within 96 hours of exposure.
Conclusions:
- Confirm immunity via rapid testing when possible.
- Administer varicella zoster immunoglobulin if immunity is uncertain or testing is not feasible.
- Timely intervention is crucial for preventing adverse outcomes in pregnant patients exposed to chickenpox.
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