Related Questions

After getting a vaccine for hep b, how quickly would side effects occur?

Rare. An allergic side effect can be immediate--as could be seen with any vaccine or medicine-- is rare the incidence is about 1/ 1.1 million doses. The more common side effects--take several hours to develop: sore arm: 25% temperature to 99.9 f: 6% mild aches, "flu like" symptoms. Read more...