[Relapse of Q fever in childbirth and transmission of the pathogen to the child].

A case was described when a newborn was inoculated with Coxiella Burnetti as a result of infection relapse (in 8 months after acute disease) in his mother. Coxiella Burnetii were isolated from blood of both patients. Dynamics of humoral immunity indices in mother was observed both at the primary disease and during the period of infection relapse.