WHO's age-dependent tachypnoea criteria for diagnosing pneumonia in children and WHO's clinical criteria for assessing disease severity
| Age range | Age-dependent tachypnoea criteria |
|---|---|
| <2 months | >60 breaths/min |
| 2–11 months | >50 breaths/min |
| 12–59 months | >40 breaths/min |
| Severity grade | Clinical criteria |
| Non-severe | Age-dependent tachypnoea only |
| Severe | Above, plus indrawing |
| Very severe | Above plus lethargy/poor feeding |