Sex

Female (0 pts)+0Male (+1 pt)+1

Age

< 50 years (0 pts)+050–65 years (+2 pts)+266–80 years (+3 pts)+3> 80 years (+4 pts)+4

Performance Status / Usual Daily Activities

Active: no limitation of normal activities (0 pts)+0Strenuous activity limited but able to carry out light work (+1 pt)+1In bed < 50% of the day — able to do some self-care (+2 pts)+2In bed > 50% of the day — limited self-care (+3 pts)+3Completely disabled — no self-care (+4 pts)+4

Respiratory Rate (breaths/min)

12–20 (0 pts)+0< 12 OR 21–24 (+1 pt)+125–29 (+2 pts)+2≥ 30 (+3 pts)+3

SpO₂ (%)

≥ 96% (0 pts)+094–95% (+2 pts)+292–93% (+3 pts)+3≤ 91% (+3 pts)+3

Heart Rate (bpm)

51–90 (0 pts)+041–50 OR 91–110 (+1 pt)+1111–130 (+2 pts)+2≤ 40 OR > 130 (+3 pts)+3

Systolic BP (mmHg)

111–219 (0 pts)+0101–110 (+1 pt)+191–100 (+2 pts)+2≤ 90 OR ≥ 220 (+3 pts)+3

Temperature (°C)

35.1–36.0°C OR 36.1–38.0°C (0 pts)+038.1–39.0°C (+1 pt)+1≤ 35.0°C OR ≥ 39.1°C (+2 pts)+2

Alertness / Consciousness (ACVPU)

Alert (0 pts)+0Confused/altered/new onset confusion, voice, pain, or unresponsive (+3 pts)+3

Inspired O₂ at Time of Assessment

Air (room air) (0 pts)+0Supplemental oxygen (+2 pts)+2

PRIEST Score — Pandemic Respiratory Illness Scientific Triage

PRIEST Score — Pandemic Respiratory Illness Scientific Triage