Before the vaccine was introduced, nearly 240,000 chickenpox cases were recorded each year in Australia along with 1500 hospitalizations and nearly 16 deaths.
Since the vaccine was brought in, there has been a 68% drop in the number of admissions to hospital. A national study which measured the number of chickenpox admissions at four hospitals showed the success rate of the chicken pox vaccine.
Further, among the children who needed hospitalizations due to severe chicken pox, 80 % had not received the immunizations.
"These results are a very strong endorsement of the impact of the chickenpox vaccine," the study's lead author Helen Marshall from the University of Adelaide said.
The study also showed that hospital admissions due to chicken pox have come down to below 500 presently.