Volume 12, Number 5—May 2006
Spatial Analysis of Sleeping Sickness, Southeastern Uganda, 1970–2003
|Interval (cluster)||Districts in most likely cluster||Cluster date||No. observed cases||No. expected cases||Relative risk*||p value||Cluster radius (km)|
|1970–1975||Mayuge, Bugiri, and southern Iganga||1973–1975||63||8||8.3||0.0001||41|
|1976–1979||Northwest shift to include northern Mayuge, Iganga, Jinja, and southeastern Kamuli||1978–1979||311||23||13.5||0.0001||29|
|1980–1988||Wider extent, including Mayuge, Bugiri, Iganga, Jinja, and southern Kamuli||1985–1988||13,943||1,865||7.5||0.0001||45|
|1989–1997||As above, plus Tororo, Busia, eastern Mukono, southern Kayunga, and southern Pallisa||1989–1992||3,176||869||3.7||0.0001||74|
|1998–2003 (A)†||Northwestern Iganga (Luuka county) and southern Kamuli||1999–2001||331||26||12.6||0.0001||19|
|(C)†||Tororo (Osukulu subcounty)||2001–2002||89||7||12.9||0.0001||6|
|(D)†||Mukono (subcounties of Buikwe, Buyikwe, Najja, Ngogwe, and Ssi)||1998||50||4||12.5||0.0001||0‡|
*Observed no. cases/expected no. cases.
†Multiple clusters were identified during 1998–2003. Letters correspond to cluster labels in Figure 8.
‡Cluster included only 1 observation representing 5 merged subcounties.
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