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A 29-year-old female asked:

How much immunity does the first hepatitis b vaccine shot provide?

2 doctor answers5 doctors weighed in
Dr. Neigatha Graney
Pediatrics 38 years experience
One Dose Not Enough: Hepatitis B virus occurs world wide; is a cause of serious liver disease; is transmitted thru blood/body fluids. Immunization is effective for prevention & post-exposure management. Vaccination after 2 doses provides protection in up to 80% of recipients and protects 90-95% after 3 doses. Blood test to confirm immunity after vaccination recommended for certain risk groups. Discuss with doctor.
Dr. Heidi Fowler
Psychiatry 26 years experience
Hepatitis B vaccine: One shot is not adequate for protection.
Last updated Oct 26, 2018

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