Table 2.
Prevalence of infestation by Triatoma infestans and infection with Trypanosoma cruzi in Triatoma infestans, dogs and cats from two neighboring rural areas under different community-based vector control strategies in Santiago del Estero, October 2002– July 2003; nd, no data available.
| Prevalence of infestation (%) | Prevalence of infection (number examined) | |||||
|---|---|---|---|---|---|---|
| Village group | Number of houses | Domestic | Peridomestic | Bugs | Dogs | Cats |
| Area under pulsed control actions b | ||||||
| Celestina | 7 | 0 | 57 | 0.0 (39) | nd | nd |
| Central Dolores | 48 | 9 | 57 | 0.4 (254) | 0.0 (26) | 0.0 (11) |
| Escudero | 22 | 10 | 40 | 3.1 (96) | nd | nd |
| Gondra | 6 | 0 | 20 | 0.0 (1) | 0.0 (14) | 0.0 (1) |
| Laprida | 20 | 5 | 63 | 1.5 (137) | nd | nd |
| La Curva | 6 | 83 | 100 | 2.7 (73) | 20.0 (20) | 0.0 (4) |
| Pampa Pozo Barrio | 2 | 0 | 0 | - | 0.0 (7) | - |
| Rosario | 39 | 37 | 49 | 8.5 (235) | 17.1 (76) | 16.7 (18) |
| San Pablo | 8 | 0 | 25 | 0.0 (17) | 6.3 (16) | 0.0 (6) |
| Santo Domingo | 26 | 23 | 46 | 12.7 (71) | 13.6 (59) | 5.0 (20) |
| Total | 186 | 17.6 | 50.7 | 4.0 (923) | 11.8 (221) | 6.6 (61) |
| Mean (SD)a | 18.5 (25.7) | 50.7 (22.1) | 3.6 (4.6) | 8.1 (8.7) | - | |
| Area under sustained surveillance | ||||||
| Amamá | 66 | 12 | 35 | 1.1 (176) | 5.6 (144) | 0.0 (22) |
| Mercedes | 34 | 6 | 30 | 0.0 (117) | 5.7 (53) | 0.0 (12) |
| Pampa Pozo | 9 | 0 | 33 | 0.0 (41) | 0.0 (17) | 0.0 (7) |
| Trinidad | 28 | 23 | 23 | 1.8 (56) | 2.3 (44) | 14.3 (7) |
| Total | 137 | 11.7 | 31.3 | 0.8 (390) | 4.7 (258) | 2.1 (48) |
| Mean (SD)a | 9.0 (9.9) | 19.3 (11.6) | 0.7 (0.9) | 3.4 (2.8) | - | |
a
Only villages with ≥6 houses or with ≥10 T. infestans or dogs examined for infection were considered when calculating mean infestation or infection prevalence.
b
Excludes two isolated settlements where no T. infestans were found (San Luis and Lote S). No infection was found in 3 dogs and 1 cat examined from the latter.