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Table 2 Number and proportion of samples positive for PfHRP2 antigen and anti-PfHRP2 antibody by ELISA

From: Circulating antibodies against Plasmodium falciparum histidine-rich proteins 2 interfere with antigen detection by rapid diagnostic tests

Sample type Country n Antigen Antibody
    No (%) No (%)
Acute patients (symptomatic & microscopy + ve) Cambodia 15 14* (100)* 3 (20.0)
  Nigeria 23 21 (91.3) 8 (34.7)
  Philippines 37 23 (62.2) 8 (21.6)
  Sub-total 75 57 (76.0) 19 (25.3)
Asymptomatic (microscopy + ve or –ve) Solomon Islands 28 6 (21.4) 3 (10.7)
Uninfected endemic controls Nigeria 10 0 0 0 0
  Philippines 8 0 0 2 (25)
Non-exposed controls Brisbane 6 0 0 0 0
  1. *Antigen measured for 14 samples.