Here is my question : following the risk taken , I had a hepatitis B vaccination one week after the risk ( first dose ) then a second dose one month after the risk. 

I then performed 2 test :

- the first at 12 weeks of risk

- the second at 100 days

Both negative for ABsGA and showing that the vaccine had work ( anti HBS >100). 

Could the 2 dose of vaccine have influenced my negative result ( in term of deadline ) 

Does the vaccination have an impact on the test result , does it postpone the window period ? ( like PEP for HIV ) ?

Can I consider myself now secure with these two test on possible hep b infection ? 

Thank so much 

You did not even need testing for HBV, but your negative test results prove you were not infected, and your post-vaccine testing show you now are immune. And no, vaccination does not have any effect on the reliability of your negative test results. (The analogy with PEP for HIV is wrong; the biology of PEP and vaccination are entirely different from each other.)

"Can I consider myself now secure with these two test on possible hep b infection?" Yes. You were never at risk and you are now immune to HBV.

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