​                                           VARICELLA VACCINE
Routine vaccination


 -  Minimum age: 12 months


 - Administer the first dose at age 15 through 18 months, and the second dose at age 4 through 6 years.


 - The second dose may be administered before age 4 years, provided at least 3 months have elapsed since the first 

    dose.


 -  If the second dose was administered at least 4 weeks after the first dose, it can be accepted as valid.


 -  The risk of breakthrough varicella is lower if given 15 months onwards.


 -  Ensure that all persons aged 7 through 18 years without'evidence of immunity' have 2 doses of the vaccine.


 -  Evidence of immunity' to varicella includes any of the following:
           - documentation of age-appropriate vaccination with a varicella vaccine
           - laboratory evidence of immunity or laboratory confirmation of disease
           - diagnosis or verification of a history of varicella disease by a health-care provider
           - diagnosis or verification of a history of herpes zoster by a health-care provider


 -  For children aged 12 months through 12 years, the recommended minimum interval between doses is 3 months.


 - However, if the second dose was administered at least 4 weeks after the first dose, it can be accepted as valid.


 - For persons aged 13 years and older, the minimum interval between doses is 4 weeks.


 - For persons without evidence of immunity, administer 2 doses if not previously vaccinated or the second dose if 

    only 1 dose has been administered.​



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