Table 1.

Characteristics of secondary TB cases

#	Age, gender and exposure Intensity	Symptoms	Chest X-ray	TST	Diagnosis
1	23 F, shares a bed	Cough, fever, chest pain, dyspnoea, fatigue	Abnormal	N/A	Sm + MDR (Gene Xpert) No DST
4	5 M, household	Cough	Abnormal	Positive	MDR Discordant DST
11	6 F, shares a bed	Nil	Abnormal	Positive	MDR Identical DST
15	21 M, shares bedroom	Nil	Abnormal	N/A	Sm + MDR Identical DST
16	14 M, shares bedroom	Weight loss	Abnormal	Positive	Sm- MDR (Gene Xpert) No DST
37	3 F, shares a bed	Cough, fever, weight loss, sweats, chest pain, fatigue	Abnormal	N/A	Sm + MDR Identical DST
67	46 M, household	Cough, fever, chest pain	Normal	N/A	Sm- DS-TB

#: Number, DSTB Drug susceptible tuberculosis, DST Drug susceptibility testing, F Female, M Male, MDR Multidrug resistant, N/A Not applicable, Sm+: Sputum smear positive, Sm-: Sputum smear negative