Table 3.
Age-specific contributions to local malaria transmission
| Prevalence of infectiousness % (number of infectious individuals/total number of participants) | % of infected mosquitoes (number of infected mosquitoes/number of dissected mosquitoes) | Contribution to the pool of infected mosquitoes before adjustment for mosquito exposure (%) | Contribution to the pool of infected mosquitoes after adjustment for mosquito exposure (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age (in years) | <5 | 5–15 | >15 | <5 | 5–15 | >15 | <5 | 5–15 | >15 | <5 | 5–15 | >15 |
| Burkina Faso | ||||||||||||
| Dry | 8.3 (4/48) | 9.0 (9/100) | 2.0 (1/50) | 0.7 (29/4263) | 0.8 (74/8707) | 0.2 (7/4261) | 25.8 | 52.5 | 21.7 | 2.9 | 45.8 | 51.3 |
| Wet | 6.7 (3/45) | 7.0 (7/100) | 6.0 (3/50) | 2.2 (40/1832) | 1.8 (73/3979) | 0.4 (8/1893) | 32.9 | 45.0 | 22.1 | 3.9 | 41.1 | 55.0 |
| Mbita | ||||||||||||
| Dry | 4.9 (2/41) | 5.1 (3/59) | 2.0 (2/102) | 0.1 (2/1468) | 0.9 (21/2292) | 0.1 (5/3311) | 6.3 | 69.3 | 24.4 | 2.9 | 73.5 | 23.6 |
| Wet | 0 (0/49) | 2.0 (1/50) | 1.0 (1/101) | 0 (0/1937) | 0.2 (3/1674) | 0.06 (2/3231) | 0 | 57.5 | 42.5 | 0 | 59.7 | 40.3 |
| Kilifi | ||||||||||||
| Wet | 3.0 (2/66) | 0 (0/76) | 0.8 (1/132) | 0.2 (3/1850) | 0 (0/2024) | 0.03 (1/3842) | 64.1 | 0 | 35.9 | 46.0 | 0 | 54.0 |
For the high (Burkina Faso) and moderate (Mbita, Kenya) transmission settings, local age-specific exposure to mosquitoes was quantified and used to estimate the contribution of different age groups to the pool of infected mosquitoes. For Kilifi estimates, age-specific mosquito exposure determined in Mbita was used. Estimates in this table include P. falciparum mono-infections and mixed or non-falciparum infections