Multihost Tuberculosis: Insights from the Portuguese Control Program
Figure 1
(a) Number of herds officially bTB free (white bars) and nonofficially bTB free (black bars) among the total number of herds (indicated by grey bars) in Portugal, for the period 2001–2009. Officially bTB free herds refer to herds that exclusively comprise animals exempt of disease symptoms and enclosing animals that yielded negative reactions to two consecutive official intradermal tests (applicable for cattle aged over 6 weeks). Source: [4]. (b) Number of reactor animals and reactor herds and animal/herd prevalence in Portugal for the period 2001–2009.
