The chickenpox vaccine is usually available for babies over 1 year of age. Chickenpox vaccination is given to healthy children over the age of one year and to persons susceptible to chickenpox, and is administered through a subcutaneous injection in the upper arm at the deltoid muscle attachment. For children between the ages of 1 and 12 years, one dose of the vaccine is usually given, while persons 13 years of age and older require two doses of the vaccine, separated by an interval of 6 to 10 weeks. Localized redness and swelling, transient fever, mild rash and other drug reactions may occur after varicella vaccination. Usually there is no need for special treatment, it will subside by itself, when the situation is serious, symptomatic treatment is needed. Varicella vaccine is contraindicated for people with a history of allergy, serious illness, immunodeficiency, and pregnant women. Before your baby needs to be vaccinated with chickenpox vaccine, you need to actively consult a professional doctor and listen to his/her advice.