Yield of tuberculosis among household contacts of tuberculosis patients in Accra, Ghana

Table 1 Outcome of TB contact investigation in Accra, 2010–2014

Year	Number of index TB cases registered	Number of index cases with contacts listed	Number of contacts listed	Number of contacts screened	Number of contacts suspected to have TB	Number of contacts suspected with TB who were tested	TB cases identified	Prevalence of TB among contacts screened (%)	NNS	NNT
2010^a	359	316	811	679	28	28	10	1.5	68	2.8
2011	873	826	2051	1953	136	136	15	0.8	130	9
2012	872	794	2285	2219	175	153	11	0.5	202	13.9
2013	797	749	1930	1945	139	64	9	0.5	216	7
2014^b	604	582	1442	1370	136	57	8	0.6	171	7
Total	3505	3267	8519	8166	614	438	53	0.65	154	8

^aThe data from 2010 reflects only seven months of that year, from June to December. ^bIn 2014, contact investigation activities continued for the entire year up to December 31 even though funding for the project ceased

ISSN: 2049-9957