BACKGROUND. Genital infection is the most important cause of infertility wo
rldwide, affecting not only Fallopian tubes but all anatomic urogenital sit
es, both male and female.
METHODS. We present a randomized, prospective and normalized study about se
xually transmitted diseases (STD). We include 487 patients, 376 of whom wer
e infertile and the remaining 111 were not and act as control group.
RESULTS. 47.3% of infertile patients showed at least one infection: 10.7% h
ad Chlamydia trachomatis infection, whereas only 0.3% had gonococal infecti
on. We found none syphilis. 12.9% of the patients showed yeast belonging to
genus Candida, 5% bacterial vaginosis, 3.8% Escherichia coli and 0.3% Kleb
siella pneumoniae. The percentage of isolation of Ureaplasma urealyticum an
d Mycoplasma hominis were 23.5% and 4.8%, respectively. We detected antibod
ies against Hepatitis B ( any serological marker) in 7.8% of the cases. Chl
amydial infection and the presence of U. urealyticum were related with infe
rtility (chi 1(2)=6,070, p<0.005 and <chi> 1(2)=8,782, p<0.005, respectivel
y).
CONCLUSIONS. We think these results conclude that is necessary to perform r
outine tests to screen for C. trachomatis, N. gonorrhoeae, and for infectio
ns caused by micoplasma as well, among infertile patients. These patients m
ust be considered of being at risk of acquiring STD, since the percentage o
f these diseases is higher than the percentage we found among the control g
roup. It is important to insist on prevention and early diagnosis and treat
ment as a main goal to decrease the number of tubal occlusion and infertile
couples.