Likelihood of group A streptococcal pharyngitis.
The Centor Score (McIsaac modified) is a infectious scoring tool used in paediatric practice. Likelihood of group A streptococcal pharyngitis. It scores 5 criteria and interprets the total across 3 bands, so the number always arrives with the severity it implies rather than on its own. In PediAid each criterion is shown as a labelled option with the weight it carries, so the total can be checked rather than taken on trust.
5. They are Tonsillar exudate or swelling; Tender / swollen anterior cervical nodes; History of fever > 38 °C; Cough; Age.
The total is interpreted as: any score - Low risk: score ≤1 - roughly 1-10% risk of strep. No testing or antibiotics required; 2 points or more - Intermediate: score 2-3 - roughly 11-35% risk. Perform rapid antigen test or throat culture and treat if positive; 4 points or more - High risk: score ≥4 - roughly 50% risk. Test and treat if positive; empirical antibiotics considered in some settings.
No. It is a structured way to record and communicate severity. A clinician concerned about a child should act on that concern regardless of the total.
The McIsaac modification adds the age adjustment (−1 point for age ≥45, not scored negatively here).
Yes. Score definitions are bundled with the PediAid app, so the score computes without a connection.