Table 3. Significant temporal clustering of human cases of infection with Mycobacterium africanum SIT 181, The Gambia, August 14, 2007–June 3, 2008*.

No. cases		Relative risk	LLR	p value
Actual	Expected
48	21.30	2.65	14.424230	0.001

*Detected with SaTScan version 9.1.1 software (www.satscan.org) (14) by applying retrospective purely temporal analysis using the discrete Poisson model. SIT, shared international type; LLR, log-likelihood ratio.