What should you know about cdc varicella vaccine?

Varicella is the virus that causes chickenpox, an infection known for an itchy blistering rash and fever. The vaccine uses a live attenuated form of the virus, meaning it is weakened so it can stimulate immune protection without causing typical chickenpox in most healthy recipients. Vaccination can also make breakthrough illness milder. It is not suitable for everyone, so pregnancy, immune problems, and certain medicines need to be discussed before vaccination. Read more about the Live Attenuated Vaccine and Chickenpox.

Ask a clinician to check your vaccination record and personal medical history. If doses are due, the clinic can explain the recommended timing, injection-site reactions, and what to do if an appointment is missed. Avoid assuming that a past rash proves immunity; a clinician can clarify whether your history or documentation is sufficient. Details are available under Chickenpox Vaccination.

Contact a clinician promptly after exposure if you are pregnant, have a weakened immune system, or take immune-suppressing medicine. Seek urgent care for breathing difficulty, confusion, severe dehydration, rapidly spreading rash, or a serious allergic reaction after vaccination. A new rash or fever after vaccination should be discussed if it is severe or worsening.

Ask whether you need vaccination, whether a live attenuated vaccine is appropriate for you, how to space doses, and which symptoms after the injection should prompt a call.