Some people need booster dose some not, You should test hbsab quantity, if it is > 10 then you have immunity. If the value should be <100, get vaccine again.
Normally vaccine lasts for 10-15 years.
i took vaccine against hepatitis B in 1999. but i missed the booster that was due in 2010.what should I do now ?? is this vaccine is still working ??
The same chance as you would win a lottery, not impossible but highly unlikely. When we are surrounded by germs and each of us carry our own collection of germs, why would your share a straw or spoon? Always practise the Universal principle - assume everyone, including yourself is infected and behave appropriately.