Infants

Apnea or grunting
Oxygen saturation ≤ 92 percent
Respiratory rate > 70 breaths per minute
Poor feeding

Older children

Grunting
Oxygen saturation ≤ 92 percent
Respiratory rate > 50 breaths per minute
Inability to tolerate oral intake

All age groups

Comorbidities (e.g., chronic lung disease, asthma, unrepaired or incompletely repaired congenital heart disease, diabetes mellitus, neuromuscular disease)
Family is not able to provide appropriate observation
Source: AAFP, Criteria for Hospitalization for Children with Community Acquired Pneumonia, scroll down to table 5

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