Volume 13, Number 3—March 2007
Synopsis
Human and Animal Vaccination Delivery to Remote Nomadic Families, Chad
Esther Schelling*1
, Mahamat Bechir†, Mahamat Abdoulaye Ahmed†, Kaspar Wyss*, Thomas F. Randolph‡, and Jakob Zinsstag*
, Mahamat Bechir†, Mahamat Abdoulaye Ahmed†, Kaspar Wyss*, Thomas F. Randolph‡, and Jakob Zinsstag*
Table 1
Overview of 14 vaccination campaigns among mobile pastoralists in 4 zones of Chari-Baguirmi and Kanem Prefectures, Chad*
| Zone | Campaign no. | Beginning–end of campaign | No. vaccination days | Vaccination contacts | % Dropout | ||
|---|---|---|---|---|---|---|---|
| Children and women | Livestock | Children | Women | ||||
| Gredaya† | 1 | Jul 7, 2000–Feb 11, 2001 | 46 | 11,731 | 31,721‡ | 56 | 21 |
| Chaddra† | 2 | Jan 6–Apr 21, 2001 | 26 | 1,961 | 2,182 | 68 | 7 |
| Gredaya† | 3 | Jun 21–Nov 11, 2001 | 37 | 3,855 | 22,760 | – | – |
| AmDobak† | 4 | Aug 3–Dec 5, 2001 | 34 | 3,079 | 0 | 59 | 42 |
| Gredaya§ | 5 | Apr 2–Jul 1, 2003 | 46 | 5,595 | 16,138 | 45 | 19 |
| Dourbali§ | 6 | Mar 8–Jun 7, 2003 | 47 | 6,715 | 887 | 72 | 41 |
| Chaddra | 7 | Sep 27, 2003–Jan 3, 2004 | 43 | 3,031 | 215 | – | – |
| AmDobak | 8 | Oct 19–Dec 6, 2003 | 29 | 3,049¶ | 0 | – | – |
| Gredaya§ | 9 | Mar 5–Jul 5, 2004 | 54 | 6,522 | 24,514 | 68 | 33 |
| Dourbali§ | 10 | Apr 29–Jul 25, 2004 | 54 | 3,370 | 5,104 | 89 | 57 |
| Gredaya | 11 | Jan 10–Mar 30, 2005 | 42 | 3,883 | 13,217 | – | – |
| Dourbali | 12 | May 18–Aug 17, 2005 | 41 | 3,477 | 32,517 | – | – |
| AmDobak | 13 | Oct 23–Dec 7, 2005 | 21 | 2,705¶ | 0 | – | – |
| Chaddra | 14 | Oct 16, 2005–Jan 9, 2006 | 31 | 1,886 | 0 | – | – |
*Dropout rates were calculated for the first campaign in each zone (vaccination in a naive population) and for 2003 and 2004 after omission of persons with previous vaccinations and not considering those entering the campaign during the second and third rounds. –, not applicable.
†Costing study.
‡Two rounds with veterinarians.
§Estimation of achieved vaccination coverage during campaign.
¶Only 2 human vaccination rounds carried out.
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