Table 3.
Identification of member species, abundance, and transmission rates of malaria-transmitting mosquitoes caught in window traps in intervention areas of Mozambique,§ 1999–2005
An. gambiae s.l.
|
An. funestus s.l.
|
||||
---|---|---|---|---|---|
Pre-IRS | Post-IRS | Pre-IRS | Post-IRS | ||
Total number of mosquitoes collected | 5,577 | 969 | 8,830 | 2,107 | |
Number tested by PCR | 903 | 721 | 818 | 575 | |
Percent An. arabiensis | 85 | 35 | Percent An. funestus s.s. | 95 | 65 |
Percent An. merus | 11 | 58 | Percent An. rivulorum | 1 | 24 |
Percent An. quadriannulatus | 4 | 7 | Percent An. vaneedeni | 0 | 3 |
Percent An. parensis | 1 | 2 | |||
Percent An. leesoni | 3 | 6 |
An. gambiae s.l.
|
||||||
---|---|---|---|---|---|---|
Pre-IRS | Post-IRS | Pre-IRS | Post-IRS |
An. funestus s.s.
|
||
|
||||||
An. arabiensis | An. merus | Pre-IRS | Post-IRS | |||
Total estimated | 4,740 | 339 | 613 | 562 | 8,389 | 1,370 |
Mean/trap/100 nights (density) | 14.9 | 0.2 | 1.9 | 0.4 | 26.3 | 0.9 |
Sporozoite prevalence, %(n), p | 7.1 (758) | 0.8 (239), p= 0.002 |
2.2 (91) | 0.7 (413), p=0.25 |
4.7 (773) | 2.2 (367), p= 0.04 |
Transmission index* | 1.058 | 0.002 | 0.04 | 0.003 | 1.236 | 0.020 |
Transmission index relative to baseline | 1.00 | 0.002 | 1 | 0.067 | 1.0 | 0.016 |
Excluding zone 2A, where the intervention was interrupted.
The estimated number of infective mosquitoes exiting window traps.