Figure 2From: Eradication of bovine tuberculosis at a herd-level in Madrid, Spain: study of within-herd transmission dynamics over a 12 year period Kaplan-Meier survival estimates of time to recover official tuberculosis free (OTF) status in outbreaks resolved with (n = 98) and without (n = 365) the use of interferon-gamma assay as an ancillary test in the Autonomous Community of Madrid in the period 1997–2009. Back to article page