the chickenpox varicella vaccine was introduced in the united states in 1995.
the chickenpox varicella vaccine was introduced in the united states in 1995.
when was the chickenpox varicella vaccine introduced in the united states?
1995
japan was among the first countries to vaccinate for chickenpox. the vaccine was first licensed in the united states in 1995. routine vaccination against varicella zoster virus is also performed in the united states, and the incidence of chickenpox has been dramatically reduced there (from 4 million cases per year in the pre-vaccine era to approximately 400,000 cases per year as of 2005). in europe most countries do not currently vaccinate against varicella, though the vaccine is gaining wider acceptance. australia, canada, and other countries have adopted recommendations for routine immunization of children and susceptible adults against chickenpox.
varicella vaccine
varicella vaccine









































varicella vaccine, also known as chickenpox vaccine, is a vaccine that protects against chickenpox. one dose of vaccine prevents 95% of moderate disease and 100% of severe disease. two doses of vaccine are more effective than one. if given to those who are not immune within five days of exposure to chickenpox it prevents most cases of disease. vaccinating a large portion of the population also protects those who are not vaccinated. it is given by injection just under the skin.
varicella vaccine