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J Obstet Gynaecol Can. 2009 Nov;31(11):1085-101.

Immunization in pregnancy.

[Article in English, French]

Abstract

OBJECTIVE:

To review the evidence and provide recommendations on immunization in pregnancy.

OUTCOMES:

Outcomes evaluated include effectiveness of immunization, risks and benefits for mother and fetus.

EVIDENCE:

The Medline and Cochrane databases were searched for articles published up to June 2008 on the topic of immunization in pregnancy.

VALUES:

The evidence obtained was reviewed and evaluated by the Infectious Diseases Committee of the Society of Obstetricians and Gynaecologists of Canada (SOGC) under the leadership of the principal authors, and recommendations were made according to guidelines developed by the Canadian Task Force on Preventive Health Care.

BENEFITS, HARMS, AND COSTS:

Implementation of the recommendations in this guideline should result in more appropriate immunization of pregnant and breastfeeding women, decreased risk of contraindicated immunization, and better disease prevention.

RECOMMENDATIONS:

The quality of evidence reported in this document has been assessed using the evaluation of evidence criteria in the Report of the Canadian Task Force on Preventive Health Care (Table 1). (1) All women of childbearing age should be evaluated for the possibility of pregnancy before immunization. (III-A). (2) Health care providers should obtain a relevant immunization history from all women accessing prenatal care. (III-A). (3) In general, live and/or live-attenuated virus vaccines should not be administered during pregnancy, as there is a, largely theoretical, risk to the fetus. (II-3B). (4) Women who have inadvertently received immunization with live or live-attenuated vaccines during pregnancy should not be counselled to terminate the pregnancy because of a teratogenic risk. (II-2A). (5) Non-pregnant women immunized with a live or live-attenuated vaccine should be counselled to delay pregnancy for at least four weeks. (III-B). (6) Inactivated viral vaccines, bacterial vaccines, and toxoids can be used safely in pregnancy. (II-1A). (7) Women who are breastfeeding can still be immunized (passive-active immunization, live or killed vaccines). (II-1A) (8) Pregnant women should be offered the influenza vaccine (including H1N1 vaccine, when it is available) when they are pregnant during the influenza season. (II-1A). (9) Pregnant women with suspected or documented H1N1 infection should be treated with oseltamivir (Tamiflu, 75 mg twice daily for 5 days) within 48 hours of onset of symptoms. (III-B).

PMID:
20175349
[Indexed for MEDLINE]

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