Season | Malaria infection | Pre-intervention prevalence | Intervention prevalence | % reduction (95% CI) | ||
---|---|---|---|---|---|---|
Int. village | Con. village | Int. village | Con. village | |||
Long rains | P. falciparum | 3/240 (12.5) | 6/229 (26.2) | 10/242 (41.3) | 49/232 (211.2) | 59% (51.7–64.5) |
P. vivax | 5/240 (20.8) | 4/229 (17.5) | 6/242 (24.8) | 4/232 (17.2) | − 21% | |
Mixed | 0 | 0 | 2/242 (8.3) | 5/232 (21.6) | ND | |
Total | 8/240 (33.3) | 10/229 (43.7) | 18/242 (74.4) | 58/232 (250) | 61% (54.3–66.8) | |
Short rains | P. falciparum | 11/237 (46.4) | 9/219 (41.1) | 11/220 (50) | 13/203 (64) | 31% (25.7–35.4) |
P. vivax | 5/237 (21.1) | 5/219 (22.8) | 7/220 (31.8) | 12/203 (59.1) | 42% (37–46.8) | |
Mixed | 0 | 0 | 0 | 3/203 (14.8) | ND | |
Total | 16/237 (67.5) | 14/219 (63.9) | 17/220 (81.8) | 28/203 (137.9) | 44% (40.3–47.6) | |
Dry season | P. falciparum | 5/487 (10.3) | 2/482 (4.1) | 12/228 (52.6) | 14/210 (66.7) | 68.6% (64.2–72.7) |
P. vivax | 5/487 (10.3) | 4/482 (8.3) | 5/228 (21.9) | 12/210 (57.1) | 69.1% (66.4–73.4) | |
Mixed | 0 | 0 | 0 | 0 | ND | |
Total | 10/484 (20.5) | 6/482 (12.4) | 17/228 (74.6) | 26/210 (123.8) | 63.5% (58.8–67.4) | |
Overall period | P. falciparum | 19/964 (19.7) | 17/930 (18.3) | 33/690 (47.8) | 76/645 (117.8) | 62.3% (54.3–67.4) |
P. vivax | 15/964 (15.6) | 13/930 (14) | 18/690 (26.1) | 28/645 (43.4) | 46% (42.6–49.5) | |
Mixed | 0 | 0 | 2/690 (2.9) | 8/645 (12.4) | ND | |
Total | 34/964 (35.3) | 30/930 (32.3) | 53/690 (76.8) | 112/645 (173.6) | 59.6% (55–63) |