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Well-appearing febrile infants aged 90 days or younger

A deliberately narrowed Canadian summary of the CPS pathway for well-appearing term infants aged 90 days or younger; it does not claim to cover fever throughout the under-five age range.

JurisdictionCanada
Source check2026-08-20
Clinical reviewiatroX editorial team 路 Clinical editorial review 路 reviewed 2026-08-20 路 due 2027-08-20
AudienceHealthcare professionals practising in Canada
This is an iatroX educational summary of named Canada sources, not an official guideline. It does not replace the complete source documents, local policy, specialist advice or clinical judgement. The evidence source is pan-Canadian, but formularies, funded access, referral routes, public-health directions and service availability remain provincial or territorial.

Source and scope

The exact national source covers well-appearing febrile infants aged 90 days or younger, not every child under five. This page is limited to that source population and must not be extrapolated to older children.
sources for this section:CPS fever

Source-attributed clinical priorities

  • Apply this Canadian Paediatric Society statement only to well-appearing term infants aged 90 days or younger with a documented rectal temperature of at least 38掳C.
  • Use the source-defined age bands and risk stratification to choose cultures, inflammatory markers, lumbar puncture, empiric treatment and disposition.
  • Investigate and treat higher-risk young infants promptly, with reliable result follow-up and explicit return precautions for those managed as outpatients.
  • The linked CPS algorithm is limited to well-appearing term infants aged 90 days or younger with a rectal temperature of at least 38掳C.
sources for this section:CPS fever

Practical assessment and management workflow

1
Confirm age, gestation, measured fever, appearance and whether the infant meets every source inclusion and exclusion criterion.
2
Assess breathing, circulation, hydration, neurologic state, skin and a focused infection history before applying the age-band pathway.
3
Obtain the cultures, inflammatory markers and other tests required for the infant鈥檚 source-defined risk stratum.
4
Give empiric treatment and choose observation, admission or tightly arranged outpatient follow-up exactly within the CPS pathway and local capacity.
sources for this section:CPS fever

Safety, red flags and urgent escalation

  • Ill appearance, shock, respiratory compromise, seizure, focal bacterial infection or another exclusion requires immediate acute-care management outside the well-appearing algorithm.
  • Reliable rapid follow-up of cultures and clinical change is essential for any outpatient pathway.
  • Do not extrapolate the recommendations to children aged 91 days to five years or use antipyretic response to exclude serious infection.
sources for this section:CPS fever

Confirm the local pathway before acting

The evidence source is pan-Canadian, but formularies, funded access, referral routes, public-health directions and service availability remain provincial or territorial.
sources for this section:CPS fever

Source and implementation boundary

Read this educational summary with the linked source, current Canadian product information where medicines are involved, and the applicable provincial or territorial pathway. Local formularies, reporting duties, referral routes and service availability can differ.
sources for this section:CPS fever

Source documents

Use the linked source documents for complete recommendations, evidence grading, exclusions and implementation detail.

  1. Canadian Paediatric SocietyManagement of well-appearing febrile young infants aged 90 days or youngeraccessed 2026-08-20
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