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Merck Manual

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Fevers During Pregnancy


Lara A. Friel

, MD, PhD, University of Texas Health Medical School at Houston, McGovern Medical School

Last full review/revision Apr 2020| Content last modified Apr 2020
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During the 1st trimester, a temperature higher than 103° F (39.5° C) increases risk of the following:

Late in pregnancy, fever increases the risk of the following:

Doctors treat the cause of the fever, but women can also take acetaminophen to lower the temperature. Cooling blankets can be used in women with a very high fever.

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