We found the exclusion of pregnant women from industry-sponsored clinical trials to be common practice. Moving beyond reflexive exclusion and developing thoughtful criteria for inclusion of pregnant women in clinical research would likely advance the evidence base to inform treatment decisions during pregnancy and lead to better health outcomes for women and children.
Although the number of reports was relatively small, there was no evidence of a notable increase in congenital anomalies in women exposed to simvastatin or lovastatin versus the general population. Greater reporting of congenital abnormalities in the retrospective cohort is not unexpected and may reflect a reporting bias. Drugs should be used during pregnancy only if the benefits outweigh the risks. Simvastatin and lovastatin remain contraindicated during pregnancy.
No abnormal features have been reported that suggested the occurrence of congenital varicella syndrome or other birth defects related to vaccine exposure during pregnancy. Because of the small numbers, this study has limited precision, so continued surveillance is warranted. However, these results should provide some assurance to health care providers and women with inadvertent exposure before or during pregnancy.
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