mr and mrs cockles and hep b vaccination

http://app2.nea.gov.sg/news_detail_2002.aspx?news_sid=20081016414284324901

now there's this ad in sg that has mr and mrs cockles recommending the hep b vaccination. and i had always thought that mr and mrs cockles give u a hep A infection (which i'm right of course, according to the above link).
so have the hep b vaccination anyway, but it won't protect u from mr and mrs cockles.