Table 1 Relationship between incubation period and number of biting mosquitoes infected with the H-strain
No. mosquitoes used | No. patients exposed | No. with short incubation | No. with long incubation |
|---|---|---|---|
3-5 | 14 | 7 | 7 |
6-10 | 17 | 13 | 4 |
11-20 | 18 | 13 | 5 |
21-30 | 15 | 7 | 8 |
> 30 | 15 | 9 | 6 |
79 | 49 (62%) | 30 (38%) |