The employee health nurse is preparing to administer the first dose of hepatitis B vaccine to an employee. Which question is most important for the nurse to ask the employee before administering this...

The employee health nurse is preparing to administer the first dose of hepatitis B vaccine to an employee. Which question is most important for the nurse to ask the employee before administering this medication?

1. “Do you have any known allergies to medications?” 2. “Are you allergic to yeast or any type of yeast products?” 3. “Have you ever had an allergic reaction to egg yolks?” 4. “Are you allergic to any type of milk or milk products?”