When Should Second Dose Of Hepatitis AB Vaccination Be Taken?

Posted on Wed, 24 Sep 2014

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Wed, 24 Sep 2014 Answered on

Fri, 10 Oct 2014 Last reviewed on

Question : Hello Doctor,
I got my first injection of the hep A&B series and needed to return for the second one month later. It has totally slipped my mind to get the second and it has now been 3 1/2 weeks later I remembered the follow-up. What actions or what will happen now that my schedule is off. The only reason I am getting these is the fact I have chronic liver disease and anemia and receive on small occasions blood transfusions.
Thanks in advance for your help. XXXX

Answered by Dr. Arun (42 minutes later)

Brief Answer:
No issues, continue from second dose

Detailed Answer:
Hi
Thanks for writing to us.
Hepatitis AB series is given as three doses 0,1, 6 months
The second dose can be given at 1 to 2 months after first dose.
No problem in immunogenicity.

My advice is take the second dose as soon as possible and third dose remains unchanged at 6 months after first dose.
Dont worry, you will be adequately protected

Regards
DR XXXXXXX

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Above answer was peer-reviewed by : Dr. Bhagyalaxmi Nalaparaju