No but I was asking about the conventional vaccines which need 3 doses.
If someone took 2 doses and gets exposed to the virus will those 2 vaccines will help to protect against infection?
There are multiple different vaccines. In the past you would need 3 doses, but in 2017 the US FDA approved another vaccine which you only need 2 doses, its for adults only, not children. You can mix vaccines from different companies.
Here is the link.
http://www.hepb.org/prevention-and-diagnosis/vaccination/guidelines/
http://www.hepb.org/prevention-and-diagnosis/vaccination/guidelines/