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]
Hepatitis Viral hepatitis is the most common type of hepatitis worldwide.[21] Viral hepatitis is caused by five different viruses (hepatitis A, B, C, D, and E).[14] Hepatitis A and hepatitis E behave similarly: they are both transmitted by the fecal–oral route, are more common in developing countries, and are self-limiting illnesses that do not lead to chronic hepatitis.[14][22][23]