It can be given at any time after 12 months of age. Children up to 12 years old need just a single injection. Two injections 4 to 8 weeks apart are recommended for adolescents over 12 years and adults who have never had chickenpox. Expected Course New eruptions continue to crop up daily for 4 to 5 days. The fever is usually the highest on the third or fourth day.
Children start to feel better and stop having a fever once they stop getting new bumps.
The average child gets a total of 500 chickenpox sores. Chickenpox rarely leaves any permanent scars unless the sores become badly infected with impetigo or your child repeatedly picks off the scabs. However, normal chickenpox can leave temporary marks on the skin that take 6 to 12 months to fade. One attack usually gives lifelong immunity. Very rarely, a child may have a second mild attack.