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The sampling scheme of participants at the beginning of the study by district.
| Health Center | Pre-vaccination Blood Sampling Male No. (%) | Pre-vaccination Blood Sampling Female No. (%) | Total No. | Post-vaccination Blood Sampling No. |
|---|---|---|---|---|
| Khash | 47 (52.2) | 43 (47.8) | 90 | 72 |
| Sarbaz | 28 (57.1) | 21 (42.9) | 49 | 44 |
| Zahedan 1 | 39 (68.4) | 18 (31.6) | 57 | 49 |
| Zahedan 2 | 19 (51.4) | 18 (48.6) | 37 | 35 |
| Zahedan 4 | 16 (43.2) | 21 (56.8) | 37 | 36 |
| Total | 149 | 121 | 270 | 236 |
