[Ecological and epidemiological aspects of Q-fever].

Ecological and epidemiological features of Q-fever throughout its study are represented. The fact of transformation of Q-fever natural focuses to antropurgical focuses is proved. It is established that intraherd focuses, determining epidemiological status of Q-fever, have great persistence. Significant economical loss due to recurrence and chronization of the infection are proved, economical loss from one case of the disease is calculated.