Figure 1 : Positive and negative first screen 2007-2009 cohort.

Of 532 patients in the initial cohort, 493 were screened. Of these 493, 25 patients were serologically positive on the first screen.
Of those 468 patients who had a negative first screen, repeat testing was done in 261 patients. Among those 261 patients, 14
had a positive screen.

Gabriel et al.Journal of Diabetes Research and Clinical Metabolism  2015 4:1DOI : 10.7243/2050-0866-4-1