From your link:
Your risk of hepatitis B infection is increased if you:
Have unprotected sex with more than one partner
Have unprotected sex with someone who’s infected with HBV
Have a sexually transmitted disease such as gonorrhea or chlamydia
Are a man who has sexual contact with other men
Share needles during intravenous (IV) drug use
Share a household with someone who has a chronic HBV infection
Have a job that exposes you to human blood
Receive hemodialysis for end-stage kidney (renal) disease
Travel to regions with high infection rates of HBV, such as Africa, Central and Southeast Asia, and Eastern Europe
No approved school activities in that list.
True, the one the Mayo Clinic left off was eating out! One of the biggest outbreaks of Hep B was from a restaurant worker infecting food and passing it along. Ala typhoid Mary. BTW I am sure some of those things go on at school(s), approved or not.
Thackney, for better or worse, the public school has become the surrogate the state mental hospital. Children who were once institutionalized are now attending school with your children. Unvaccinated, these challanged children are at significantly increased risk of both having Hep B and passing it on to other students in the schools.
Another thing to consider is that some vaccines provide lifetime immunity, the Heptavax appears to be one of these. By vaccinating children, you are protecting them from exposures later in life, at a time when they are unlikely to be seeking medical care otherwise.