when did the hepatitis a vaccine became available
Hepatitis A vaccine The first hepatitis A vaccine was approved in Europe in 1991 and the United States in 1995.[4] It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system.[5] In the United States it costs US$50â€“100.[6]
Varicella vaccine The chickenpox vaccine first became commercially available in 1984.[2] It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system.[5] In the United States it costs between 100 and 200 USD.[6]