Infectious Disease
McIsaac Score (Modified Centor)
Estimates the probability of Group A Streptococcal pharyngitis.
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Parameters
McIsaac Score (Modified Centor) Result
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Formula
Fever (+1) + No Cough (+1) + Nodes (+1) + Exudates (+1) + Age modifier.Clinical Pearls
Helps prevent the overuse of antibiotics for viral pharyngitis while ensuring appropriate treatment for bacterial (Strep) infections to prevent complications like Rheumatic Fever.
Limitations
Not applicable to children under 3 years old, as rheumatic fever is extremely rare in this age group and presentation is often atypical.