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How long hepatitis b vaccine work. When I was 23 I used vaccine (hepatitis b) so now 28 I'm.Actually today I suddenly used needle of hepatitis positive so what do have to do now please suggest me is I need to use any medication.
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It protects for 7-10 years. Hence their is enough time for you. Moreover if you wish to repeat the vaccine you can do so. It have no. Side effect.
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