A 2 year old child has a Mantoux test reading of 12 mm × 12 mm after 48 hours. In this case :
Positive tuberculine test in 2 yrs. old child confirms T.B.
Anti – TB drugs should be started even if x–ray chest and haemogram are normal
Treatment should be started only if x–ray chest and haemogram are suggestive
One should wait till overt sign of TB appear
No treatment is required