Please advice, How and where can I get a Mantoux test done?. A baby who was given BCG injection after birth but is 4months now and no BCG scar on the
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Sometimes the BCG is given too deep instead of into the skin. Usually, to confirm in case of no BCG scar, we will do a Mantoux test to see if there is a reaction expected for someone who has had BCG. If there is none after 72 hours, we will give the BCG again as long as the child is healthy (a normal chest x-ray may be needed at times)'.