Hepatitis B vaccine can be delayed for a few days.

Injection of hepatitis B vaccine, mainly to prevent the body from hepatitis B virus infection, it is divided into three injections, each injection time doctors will tell, hepatitis B vaccine first injection and second injection time interval needs to reach one month, can be extended appropriately, but can not exceed 18 days, such as the second injection vaccine is injected on the 30th day of the first injection, want to extend, can not exceed 48 days.