| Asymptomatic | Symptomatic | |
| Azithromycin 1 g as single oral dose | 31 | 4 |
| Doxycycline 100 mg twice a day for 7 days | 28 | 11 |
| Doxycycline 100 mg twice a day for 14 days | 8 | 24 |
| Doxycycline 100 mg twice a day for 21 days | 9 | 58 |
| Azithromycin 1 g OR doxycycline for 7 days | 20 | 3 |
| Erythromycin 500 mg twice a day for 14 days | 1 | |
| Not stated | 9 | 6 |