The HBV Vaccination Series
The hepatitis B vaccine is usually given as 3 injections over a 6-month period.

The hepatitis B vaccine is very effective in protecting against the hepatitis B virus. Approximately 90 percent of people who receive the vaccine will become fully immune to the virus. The entire series of shots is required to provide full immunity, and there are very few adverse reactions.
The Vaccination Schedule
The first injection can be administered at any given time. The second injection must be given at least one month after the first, and the third injection must be given six months after the first.
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8-2. How many injections are given in the HBV vaccination series?
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