[An epidemiologic projection of foci of Q fever within herds]

In one of the rural regions of the nonchernozem zone retrospective epidemiological diagnosis was carried out in connection with high morbidity rates in acute respiratory diseases and influenza. This diagnosis was shown to cover cases of Q fever. Altogether 172 cases of this infection were retrospectively diagnosed. This infection affected persons working at one of sheep-breeding complexes, as well as at enterprises, technologically linked with this complex. Sheep proved to be the source of this infection, that was confirmed both serologically and by the registered cases of the isolation of Coxiella strain from sheep.