Hepatitis B HBV Hepatitis B teigiama https://en.wikipedia.org/wiki/Hepatitis_B_vaccine https://en.wikipedia.org/wiki/Hepatitis_B_vaccine English Hepatitis B Hepatitis B hepatitis B shot little chunks of the virus Wikipedia English English English English Wikipedia Hepatitis B vaccine vaccine Hepatitis B https://en.wikipedia.org/wiki/Hepatitis_B_vaccine Hepatitis B https://en.wikipedia.org/wiki/Hepatitis_B_vaccine subsequently licenced in 1986 Hepatitis B English hepatitis B vaccine Hepatitis B