Table 4.
Annual variation of the Anopheles gambiae and Anopheles funestus LF transmission level over the six MDA rounds
| Years | Number of mosquito collected | Number of mosquito dissected | HBR | Infection rate (L1/L2 pos) | Infectivity rate (L3 pos) | EIR | ATP |
|---|---|---|---|---|---|---|---|
| % (positive/N) | % (positive/N) | ||||||
| Before (2001) | 23265 | 17701 | 605.9 | 4.1 (718/17701) | 2.3 (402/17701) | 13.9 | 84 |
| MDA 1 (2002) | 12986 | 12986 | 338.2 | 4.6 (597/12986) | 1.4 (181/12986) | 4.8 | 28.1 |
| MDA 2 (2003) | 18394 | 18394 | 479 | 1.2 (222/18394) | 0.2 (44/18394) | 1.1 | 6.9 |
| MDA 3 (2004) | 13021 | 13021 | 339 | 1.1 (143/13021) | 0.1 (16/13021) | 0.4 | 2.5 |
| MDA 4 (2005) | 10622 | 9578 | 276.61 | 0.17 (16/9578) | 0.05 (5/9578) | 0.14 | 0.9 |
| MDA 5 (2006) | 10604 | 10604 | 276.1 | 0.06 (6/10604) | 0.02 (2/10604) | 0.05 | 0.3 |
| MDA 6 (2007) | 7832 | 4680 | 203.96 | 0.04 (2/4680) | 0.02 (1/4680) | 0.04 | 0.3 |
ATP = annual transmission potential; EIR = entomological inoculation rate; HBR = human biting rate; LF = lymphatic filariasis; MDA = mass drug administration; pos = positive.