Table 2 Malariometric indices of clinical and asymptomatic infections during the first year of life

Longitudinal survey (N = 734)

 Clinical episodes by qPCR [number (% out of total cases)]

50 (7)

122 (17)

231 (32.2)

314 (43.8)

717 (100)

 Total time at risk (person-months)

2197.07

2124.91

2056.62

1956.58

8335.18

 Incidence (per child-year)

0.27

0.69

1.35

1.92

1.03

 Parasite density by qPCR [median (IQR)]

1294 (116.5–6726)

2848 (79.1–15,356)

9044 (642–28,554)

24,823 (3607–57,492)

10,826.5 (876–38,021)

 Sub-microscopic infections [number (% out of cases per age group)]

12 (24)

29 (23.8)

39 (16.9)

34 (10.8)

114 (15.9)

Cross-sectional surveys

 Total participants per survey

678

631

587

638

2534^a

 Asymptomatic infections by qPCR [number (%)]

120 (17.7)

127 (20.1)

108 (18.4)

200 (31.3)

555 (21.9)^b

 Parasite density by qPCR [median (IQR)]

148 (4.2–1754)

24.9 (1–954.7)

454.9 (3.1–4524)

1288 (2.6–13,998)

347.8 (1.94–3534)

 Sub-microscopic infections [number (% out of cases per survey)]

58 (48.3)

69 (54.3)

49 (45.4)

79 (39.5)

255 (45.9)