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Table 1 Recovered plague patients characteristics and serology data (n = 71)

From: Short- and long-term humoral immune response against Yersinia pestis in plague patients, Madagascar

Characteristic Seronegative Seropositive P value
Total patients, n 31 40  
PP 4 1  
BP 27 39  
Median time between disease onset-blood sampling; IQR (months) 31; IQR 2–152 24; IQR 5.57–39.7 P = 0.33
Median age at onset; IQR 23; IQR 9–33.5 14; IQR 9.75–23  
Gender    P = 0.75
Male 15 22  
Female 16 18  
  1. Abbreviations: PP Pneumonic plague, BP Bubonic plague, IQR Interquartile range