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Assessment of diagnostic criteria in 34 cases of pathologically proven blood culture negative endocarditis affecting native valves
| Duke criteria | St Thomas’ criteria | |
| Definite endocarditis | 7 (21%) | 21 (62%) |
| Two major criteria* | 0 | 0 |
| One major ≥3 minor criteria | 7 | 21 |
| Probable endocarditis | 27 | 11 |
*Blood culture positivity is a major criterion.
