Immunization against hepatitis B--what can we expect? Results of a survey of antibody response to immunization in persons 'at risk' of occupational exposure to hepatitis B

D Westmoreland, V Player, D C Heap, A Hammond, D Westmoreland, V Player, D C Heap, A Hammond

Abstract

One thousand three hundred and twenty adults at risk of occupational exposure to hepatitis B were immunized using genetically engineered surface antigen and their antibody response (anti-HBs IU/l) assessed. Sex was known for all subjects and age for 1120 (range from 17-71 years). Seven hundred and sixty-four subjects were immunized in the local Department of Occupational Health, the remainder mainly by general practitioners. Analysis of 'good responders' (anti-HBs greater than 100 IU/l) according to age and sex showed that increasing age and male sex had independent adverse effects on the likelihood of developing a satisfactory level of antibody to HBsAg. Furthermore even those most likely to respond well (young women), had a 1/5 to 1/6 failure rate to achieve greater than 100 IU/l anti-HBs. Of 63 persons who received a fourth dose of vaccine, 26 developed anti-HBs titres greater than 100 IU/l when tested after 6 months. Subjects who had a low level of anti-HBs following primary immunization were more likely to develop greater than 100 IU/l anti-HBs following a booster dose than were non-responders (less than 10 IU/l).

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Source: PubMed

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