Evaluation of immune response to HBV vaccine in the staff and students of Sabzevar University of Medical Sciences (2014-15)

Hepatitis B is a bloodborne infections and it is predicted that about two billion people in the world have been exposed to the hepatitis B virus. Because of occupational reasons, medical students and staffs are more susceptible to expose to this disease than other members of society.
This study is a descriptive-analytic study and 238 staffs and students of Sabzevar University of Medical Sciences were randomly selected and sampled. Then, the antibody titer of surface anti-protein of hepatitis B virus (HBs- Ab) was measured using ELISA method and the results were analyzed using the software Stata 12 after recording the demographic results and information.
Out of 238, 156 persons were female ( 65.5%) and 82 persons ( 34.5%) were male. 66% of individuals had antibody higher than 10 mu/ml and 37.4 % of individuals showed the appropriate answers higher than 100 u/ml. The relationship between job, sex and marital status with the immune response was significant. 100% of people who received full dose along with the booster vaccine were immune. Over time, the percentage of immune people has been decreased.
Considering the reduction of response to vaccines over time and healthcare personnel being at risk, it is recommended that antibody titer was periodically examined in these individuals in 5 to 10 years to administer a booster dose in the case of a decrease in antibody titers.