Comparing anti legionella antibody titers between hospital workers and healthy population; A case-control study

Objective: to determinate legionella antibody titers among healthcare workers and healthy population.methodology: the blood samples were collected from all 360 subjects (case and control) and the elisa method was used to assess the anti-legionella igg titer. the statistical analyses were performed using the spss software version 13.results: the mean of antibody titer was 5 ± 0.38 in all participants. there was a 95.6% negative and a 2.2% positive antibody titer in the case group. in the control group, the negativity rate was 91.1% and the positivity rate was 6.7%. the antibody titer difference between two groups was not statistically significant (p value= 0.167).conclusion: the total antibody titer in both healthcare workers and healthy population was not high and the difference was not significant.