[Diagnostic titers in neorickettsiosis in sheep, cattle and swine].

Investigations were carried out after a micromethod for RCB formulation and standardization proposed by the authors used as the basic method of neorickettsiosis diagnositcs. In the course of 4 years 3614 serums of healthy animals and 289 serums of sheep, cattle and swine suffering from neorickettsiosis were investigated. It was established that the titre of complement binding antibodies in neorickettsiosis is stable. Variations are rarely observed and they are of low titre grade. Specific neorickettsiosis titres in sheep, cattle and swine are considerably high (1:128 to 1:256 and 1:512). The diagnostic value of low titres is in correlation with the phase of the infection process development and can be assessed only by following the dynamics of complement binding antibodies.