If you or your kid has been exposed to someone who has chickenpox or shingles, contact your doctor right away to find out what you should do. Even after being exposed to the virus, the varicella vaccination can be administered. This shot protects against chicken pox and also reduces your risk of getting shingles later in life. People who have never had chickenpox or shingles before but have been vaccinated still can get the disease. However, this side effect is rare. Those who have never been exposed to the virus cannot get it. However, those who have been vaccinated but didn't develop immunity will still get sick if they are exposed to the virus. The vaccine doesn't work forever and needs to be repeated periodically. Chicken pox is a very common virus that most children encounter during their early years. It usually isn't serious for those who aren't immune-compromised and doesn't cause many long-term problems for them. However, for some people, especially adults who haven't been fully vaccinated, the virus can cause severe illness and even death.