For many the BCG vaccination is ineffective and old hat, in
the US it was discontinued because
its effectiveness in preventing infectious forms of TB has been uncertain
and in
the UK becuase it was felt that
BCG vaccination does not have a significant impact on the incidence of disease in a population
However there is now
evidence to the contrary;
In July 2008 a case of smear-positive pulmonary tuberculosis (TB) in a white UK-born nursery teacher was notified in London. The case had been symptomatic for 9 months while working in the nursery...
...This outbreak shows extensive transmission of TB among very young children. BCG seems to have a protective effect against TB infection as assessed by positive IGRA in this cohort.
TB continues to confound the experts
