[Comparative study on the protective effect of two immunization schemes using a hepatitis B recombinant vaccine in vulnerable health science students].

Objective: Demonstrate the protective effect of hepatitis B in vaccine vulnerable health sciences students, under 30 years with three schemes the vaccination, two of them are conventional three doses and another one with two doses.

Hypothesis: Three schedules of vaccination dosage schemes hepatitis B produce antibody response over 10 IU/ml.

Design: Analytical, experimental, longitudinal.