it is interesting to compare cost effective of the new approach to classical tuberculin skin test. Recently, Ito et al. reported that 'estimated costs of annual QFT tests among general female nurses in Japan to prevent tuberculosis disease is very high, and annual QFT tests could not be recommended'Firstly, the Ito et al study was an estimate made on models and does not offer any alternatives or comparisons - the comment that costs were 'very high' is subjective.
Secondly, the presentation by Akiko Kowada compared QFT with TST and X-ray separately and in various combinations and with HCWs Kowada found that
The QFT alone strategy is the most cost effective in BCG vaccinated healthcare workers in Japan.
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