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Correlation between ELISA and DPP Typhoid System measurements. (A and B) Plot of anti-LPS (A) and anti-HlyE (B) IgA plasma measurements by ELISA versus DPP Typhoid System of acute enteric fever cases (red, S. Typhi or S. Paratyphi A) and controls (black, endemic healthy and febrile controls). The Pearson correlation coefficient (r) is shown.
