I enjoyed the paper by Rose et al reviewing tuberculosis at the end of the century,1 but there was one curious piece of data which the authors did not address in the discussion—namely, that the rates in the Bangladeshi population which used to be exactly the same as in the Pakistani population are now only one third of the level. Does this indicate that Bangladeshi subjects have not been immigrating to the UK over recent years at the same rate as Pakistani subjects, or could it be that it reflects a …