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Bacille Calmette Guerin (BCG) has been the sole vaccine for tuberculosis since 1921. The BCG scar disappears in a up to 25% of children.1 The presence or absence of a scar, however, does not necessarily correlate with the degree of immunoprotection. Some studies mention its immunostimulant effect which primes the Th1 lymphocytes to produce cytokines that antagonise atopy in both animal models and man.2
We conducted a cross-sectional study in a rural part of Maharashtra, India. The study population included children from seven randomly selected villages in Kallamb taluka of Osmanabad district in Maharashtra. To determine the …
Competing interests: None.
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