Volume 9, Number 3—March 2003
Research
Amplification of the Sylvatic Cycle of Dengue Virus Type 2, Senegal, 1999–2000: Entomologic Findings and Epidemiologic Considerations
Mawlouth Diallo*
, Yamar Ba*, Amadou A. Sall*, Ousmane M. Diop*, Jacques A. Ndione†, Mireille Mondo*, Lang Girault*, and Christian Mathiot*
, Yamar Ba*, Amadou A. Sall*, Ousmane M. Diop*, Jacques A. Ndione†, Mireille Mondo*, Lang Girault*, and Christian Mathiot*
Table 2
Temporal and spatial distribution of vector activity and infection in Kedougou, 1999a
| Species |
Nos. and ratesa |
Mosquitos captured in forest gallery |
Ngari |
Silling |
Bandafassi |
Kénioto |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| June | Oct | Nov | June | Oct | Nov | June | Oct | Nov | June | Oct | Nov | Nov | ||
| Aedes furcifer male |
n |
1 |
– |
8 |
– |
1 |
7 |
1 |
– |
– |
– |
– |
3 |
2 |
| Ae. furcifer female |
n |
1,053 |
1,586 |
1,204 |
2 |
315 |
110 |
37 |
33 |
23 |
21 |
66 |
50 |
18 |
| BR |
3.25 |
5.87 |
3.65 |
0.16 |
8.75 |
3.66 |
2.05 |
2.5 |
1.27 |
1.75 |
5.5 |
4.17 |
1 |
|
| TIR |
– |
0.51 |
2.99 |
– |
– |
2.85 |
– |
3.13 |
– |
– |
16.12 |
– |
5.55 |
|
| EIR |
– |
0.08 |
0.32 |
– |
– |
0.31 |
– |
0.23 |
– |
– |
2.67 |
– |
0.65 |
|
| Ae. luteocephalus female |
n |
1,063 |
682 |
390 |
– |
2 |
1 |
– |
– |
– |
- |
|||
| BR |
3.28 |
2.52 |
1.18 |
– |
– |
0.07 |
0.05 |
– |
– |
– |
– |
- |
||
| TIR |
- |
1.45 |
3.09 |
– |
– |
– |
– |
– |
– |
– |
– |
- |
||
| EIR |
– |
0.11 |
0.11 |
– |
– |
– |
– |
– |
– |
- |
||||
| Ae. aegypti female |
n |
45 |
5 |
15 |
5 |
1 |
– |
4 |
– |
– |
1 |
– |
– |
- |
| BR |
0.13 |
0.45 |
0.04 |
0.42 |
0.03 |
– |
0.22 |
0.08 |
– |
– |
- |
|||
| TIR |
– |
– |
17 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
- |
|
| EIR |
– |
– |
0.02 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
- |
|
| Ae. taylori male |
n |
21 |
2 |
32 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
- |
| Ae. taylori female |
n |
358 |
122 |
543 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
- |
| BR |
1.1 |
0.45 |
1.64 |
– |
– |
– |
– |
– |
– |
– |
- |
|||
| TIR |
- |
0.92 |
2.63 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
- |
|
| EIR | - | 0.01 | 0.13 | – | – | – | – | – | – | – | – | – | - | |
a n, number of specimens captured; BR, biting rate (number of mosquitoes captured per human per hour);
Oct, October; Nov, November; TIR, true infection rate (estimated number of positive mosquitoes per 100 mosquitoes tested according to Chiang and Reeves [18] and Walter et al. [19]); EIR, entomologic inoculation rate (number of infected mosquito bites per human per evening); –, no data obtained.
Page created: December 07, 2010
Page updated: December 07, 2010
Page reviewed: December 07, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.