some light reading, page-72

'CONCLUSION: Implementation of the QFT as a secondary test for latent TB infection (LTBI) can significantly reduce the number of patients given LTBI treatment in a low-incidence country such as Canada."

I could draw another conclusion...........

Why bother with TST. Just look at the money saving this has made. And the health saving..........not having to endure the side effects of tb TREATMENT.
Surely somebody will sue health authorities for gross NEGLIGENCE in care