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Life Guide U.S. essentials
English

If a baby under 3 months has a temperature of 38 ℃, go straight to the hospital and don't watch at home

  • High value
  • Evidence A
  • Buys life
  • For: Child under 3, Pregnant or trying
  • Costs a little
  • Takes minutes
  • No willpower

In plain words

If a child under 3 months has a temperature of 38 ℃, go straight to the hospital. Don't watch at home, and don't give fever medicine first and wait and see. At this age, even a serious bacterial infection may show only as a fever. So "looks alert enough" is no reason to wait at home. For a baby under 8 days old, even the guideline does not cover it, so go immediately.

Cost

A few hundred yuan for registration and tests.

What you get

The American Academy of Pediatrics has a dedicated guideline for full-term infants 8 to 60 days old who look reasonably well. The guideline defines fever as "temperature ≥38.0 ℃." It divides them into three bands, 8 to 21 days, 22 to 28 days and 29 to 60 days, with one management path for each. Infants under 8 days old are not even within the scope of this guideline, which means that at this stage you should seek care immediately.

Notes

At this age, a child with a serious bacterial infection may show only a fever. So looking "alert enough" is no reason to watch at home. And don't give fever medicine on your own first and then wait and see.

Evidence grade
A : Specific numbers from meta-analyses, large cohorts or randomized trials; for law and policy, the statute or official text.
Sources
  1. Pantell RH, Roberts KB, Adams WG, et al. (2021). Evaluation and Management of Well-Appearing Febrile Infants 8 to 60 Days Old. Pediatrics, 148(2), e2021052228. https://doi.org/10.1542/peds.2021-052228

Mentioned in

Translated from the Chinese original. Original book, section 20, tip 8. This section is about health and medicines. It is general information, not a substitute for a doctor’s diagnosis or prescription. Content may be out of date and rules differ by place. When you actually deal with an agency, a doctor or a court, follow what local officials, doctors and lawyers tell you. Disclaimer