Roughstuff-
it is my understanding the Hep A vaccine is effective and most effective when given
in two doses, about 6-12 months apart. Given that Hep A is usually mild and self limiting, also
that in US about 50-75% of the population has detectable antibody (almost 100% antibody pos in
endemic areas), not sure how helpful Hep A vaccine is; but would definately use the water purifier and careful about eating anything raw.
I would and did get Hep B vaccine.