Table I Characteristic of resistant and susceptible children at the baseline (contact 0)

Children were defined as “resistant” (n = 56) if they did not experience a clinical malaria episode during the 12-month study period and “susceptible” (n = 16 children) otherwise. Clinical malaria was defined as fever (temperature above 37.5 °C) and parasite density above 2500 parasite/μl.

CharacteristicResistantSusceptible
No. of individuals5616
Younger (1–2 years), n (%)26 (46.4)9 (56.3)
Female sex, n (%)24 (42.9)8 (50.0)
Parasitemic at time of sample collection, n (%)46 (82.1)12 (75.0)
Median P. falciparum density at time of sample collection (IQR) (parasites/μl)640 (110–2120)680 (240–2520)
Median Haemoglobin level (g/dL) at time of sample collection10.65 (9.56–11.13)10.50 (9.28–12.03)
Median breadtha at time of sample collection (IQR)419 (385–437)424 (407–439)
  • Only participants who had at least one P. falciparum infection recorded in the year were included.

  • aBreadth was defined as the number of positive proteins per individual.