Back to the serious stuff

For some time there didnt seem to be too much happening with the CDC Task Order 18, a bit of smoke now and then but not much in the way of fire. However, in the wrap up of the 2011 ATS conference we now have access to some data and it gets interesting when you put it into a chart;

The following might help to explain the discrepancy with the TST positive rate

"The number of patients was 2,500 at baseline, but by the time we got to 18 months, only 1,709 had skin tests," said Dr. Daley, adding that was due to dropouts and refusals of additional skin testing.

Which validates the CDC stated preference for QFT when TST return rates are poor.

Update: on reflection it would seem that return rates were not an issue as QFT and Spot were also retested. Poor return rates would have added to the discrepancy.