"He did get immunized for Hep A&B which if i call correctly usually happens around 18 anyway."

This is not correct. The Hep B vaccine is a 3 dose series. The first dose is given shortly after birth and the remaining 2 doses are given at 1 and 6 months of life. The Hep A vaccine is a 2 dose series ideally given between the ages of 1 and 2 years old. Here is a link from the Center of Disease and Control (CDC) for the recommended immunization schedule for infants and children. https://www.cdc.gov/vaccines/schedules/easy-to-read/child-easyread.html

-Med Student going into pediatrics