NPPB and hand, foot and mouth disease: In the univariate analysis, current EV71 infection [(OR 9.906, 95 % confidence interval (CI) 4.807–20.413], WBC count (OR 4.926, 95 % CI 2.442–9.938), fasting glucose (OR 81.727, 95 % CI 11.045–604.760), PCT (OR 3.737, 95 % CI 2.061–6.777) and NT-proBNP levels (>125 pg/mL) (OR 11.939, 95 % CI 5.205–27.383) were risk factors for severe HFMD.