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Centor Criteria and Probability of Infection by Group A β-Haemolytic Streptococcus.
| Centor criteria | |
|---|---|
| Fever or history of fever >38 °C | |
| Exudate or tonsillar hypertrophy | |
| Tender laterocervical adenopathies | |
| Lack of cough | |
| Centor criteria number | Probability of infection with GABHS |
| 4 | 39%–57% |
| 3 | 25%–35% |
| 2 | 10%–17% |
| 1 | 10% |
| None | 2.5% |
GABHS: group A β-haemolytic streptococcus.
