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[Correspondence] Public-funded immunisation: key to varicella control in India

Varicella (chickenpox) caused by varicella zoster virus (VZV) is an acute and extremely contagious disease.1 According to a WHO position paper,2 global annual disease burden of varicella is estimated to be 140 million cases, 4·2 million severe complications, and 4200 deaths. In developed countries, incidence of chickenpox is 16 cases per 1000 people annually. Of these cases, 3% have complications and 5% need to be admitted to hospital, with a case fatality rate of three per 100 000 cases annually.