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Uses of serology for the diagnosis of contagious bovine pleuropneumonia.

A serological test involves detection of specific changes, induced by a pathogen, in the properties or actions of serum of an infected host. The test may detect the presence in serum of either antibodies to the pathogen (produced by the host) or antigens (i.e. the infecting agent itself and/or its components). The many serological tests which have been developed for the diagnosis of contagious bovine pleuropneumonia (CBPP) are classified into two groups on the basis of this distinction. To date, no single serological test is able to detect all stages of the disease. Thus the choice of serological test (or combination of tests) will depend on the specific aim of the investigation. Meanwhile, a sensitive, specific and simple 'pen-side' test for the diagnosis of all forms of CBPP is still lacking.