Table 1 Frequency of entomological indices for the private and public areas for the overall study period and for the four survey cycles separately, Pau da Lima neighborhood, Salvador, Brazil, September 2019 to April 2021
Entomological index, according to the type of area | Survey cycle | ||||
|---|---|---|---|---|---|
Overall | 1 | 2 | 3 | 4 | |
Private area | |||||
Number of inspected householdsa | 448 | 149 | 112 | 98 | 89 |
Number of potential breeding sites | 316 | 107 | 111 | 67 | 31 |
Frequency of potential breeding sites per 100 households | 70.5 | 71.8 | 99.1 | 68.3 | 34.8 |
Number of potential breeding sites positive for Aedes aegypti immatures | 18 | 5 | 6 | 5 | 2 |
Frequency of potential breeding sites positive for Ae. aegypti immatures, in percentage (container index) | 5.7 | 4.6 | 5.4 | 7.4 | 6.4 |
House index, percentage | 4.0 | 3.3 | 5.3 | 5.1 | 2.2 |
Breteau index, percentage | 4.0 | 3.3 | 5.3 | 5.1 | 2.2 |
Total number of Ae. aegypti immatures in breeding sites | 595 | 204 | 269 | 55 | 67 |
Average number of Ae. aegypti immatures per positive breeding site | 33 | 40.8 | 44.8 | 11.0 | 33.5 |
Number of recovered ovitraps | 373 | 126 | 90 | 85 | 72 |
Number of recovered ovitraps with eggs | 157 | 60 | 33 | 35 | 29 |
Ovitrap Positivity Index, percentage | 42.1 | 47.6 | 36.6 | 41.1 | 40.2 |
Number of eggs in the ovitrap pallets | 7299 | 4075 | 835 | 1681 | 708 |
Egg Density Index, average | 46.5 | 68.0 | 25.3 | 48.0 | 24.4 |
Number of households undergoing mosquito aspiration | 446 | 147 | 112 | 98 | 89 |
Number of households with Ae. aegypti adults captured | 81 | 19 | 23 | 22 | 17 |
Adult Index, percentage | 18.2 | 12.9 | 20.5 | 22.4 | 19.1 |
Number of Ae. aegypti adults captured | 138 | 27 | 41 | 36 | 34 |
Public area | |||||
Number of potential breeding sites | 186 | 89 | 19 | 58 | 20 |
Number of potential breeding sites positive for Ae. aegypti immatures | 7 | 3 | 1 | 2 | 1 |
Frequency of potential breeding sites positive for Ae. aegypti immatures, percentage (container index) | 3.7 | 3.3 | 5.2 | 3.4 | 5.0 |
Total number of Ae. aegypti immatures in breeding sites | 283 | 29 | 138 | 115 | 1 |
Average number of Ae. aegypti immatures per positive breeding site | 40.4 | 9.6 | 138.0 | 57.5 | 1.0 |