Chickenpox Cases Down 85 Percent Since 2-Dose Vaccine Started: CDC

THURSDAY, Sept. 1, 2016 — Chickenpox — which is caused by the varicella-zoster virus — has continued declining in the United States since 2006, when doctors began routinely recommending a second dose of chickenpox (varicella) vaccine, U.S. health…
Source: Topamax