[Alice]

Screening is vital but it is not the only thing we can do. I remember when everybody had a TB jab at school. I understand that this was stopped some years ago because it was considered that we had pretty much eradicated TB from our shores. Since then there has been a proliferation in unchecked immigration - hence the majority of current TB cases being in populations born abroad. I'd be willing to bet that the other third have mostly come into contact with these people too.
Until we get a government that is brave enough to face up to this issue maybe we should start a mass immunisation programme. at least that way we might control the spread.