Ask the Experts Q & A
Q: How stringent are the time frames for administering the Hepatitis B vaccine to workers? I know the vaccine schedule of initial dose, then one-month and six-month dose. But employee vacations and sick leave may prevent us from adhering strictly to this schedule. Exactly how far off can these doses be?
A: According to the Centers for Disease Control and Prevention (CDC 800-232-2522), you may take up to two months to give the second dose and administer the third dose from four to six months after the first dose. Apparently, there is more leeway for late doses since CDC warns not to give all three doses over a time span of less than four months.
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