The Hepatitis B vaccine series requires 3 shots and Hepatitis A vaccine requires 2 shots. The last dose in both vaccines takes place 6 months after the first dose, so some people don't get the last dose until after their travels. If you've only received a portion of the total doses required for the full series, do you get any protection? If so, to what degree?
You could hardly be better.
According to Canadian public health agency, 95-100% of patients produce antibodies after 1 shot of Hepatitis A, nearly 100% after two shots.
Though, this does not mean you are nearly 100% immune after two shots
In serologic studies of HA vaccines, 95% to 100% of vaccinees developed protective concentrations of antibody against HA after a single dose of HA vaccine, and nearly 100% seroconverted after receiving two doses.
There is no reduction, and possibly even an increase, in seroprotection rates achieved by HAHB vaccine compared with monovalent HA and HB vaccines. Equivalent seroconversion rates are achieved by HA-Typh-I vaccine compared with typhoid and monovalent HA vaccines.
Disclaimer: This is no medical advice and you should consult an authorized practitioner.