The prevalence of lower urinary tract symptoms (LUTS) among rural male inhabitants aged 50 and older ones was studied. 631 (79,7 %) of 792 have been studied. Prevalence of symptoms according IPSS and Qol, maximum flow rate prostatic volume, residual volume were determined. Natural association between the prevalence of LUTS and age has been found. The epidemiological studies revealed the patients at early stages of benign prostatic hyperplasia and having irritant symptoms. The treatment with doxazonin was carried out for 69 of them (63,3 %), which was successful in 58 (84,1 %).

Asymptomatic bacteriuria as a major criterion of urinary tract infection (UTI) was revealed in 597 (25,6 %) of 2.330 rural inhabitants under study. In adults that value (25,3 %) appeared to be lower to some extent as compared with children (at age 1 to 14) - 27,2 % (<$E roman P~>>~0,5>). At the same time asymptomatic bacteriuria occurred reliably more frequent in females as compared with males, 50,3 % and 14,7 % correspondingly (<$E roman P~<<~0,001>). Use of the asymtomatic bacteriuria sign in epidemiological studies allows to reveal early stages of UTI and carry out prophylactics of the disease timely.