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THE MERCK MANUAL MEDICAL LIBRARY: The Merck Manual of Medical Information--Home Edition
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Fevers During Pregnancy

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A temperature greater than 103° F (39.5° C) during the 1st trimester increases the risk of a miscarriage and defects of the brain or spinal cord in the baby. Fever late in pregnancy increases the risk of preterm labor.

Last full review/revision December 2008 by Sean C. Blackwell, MD

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