Why Didn’t the US Have a Chickenpox Vaccine Until 1995? Examining Vaccination Gaps and Global Practices
The United States did not have the chickenpox vaccine until 1995 due to several reasons. Experts were concerned about the duration of immunity and possible side effects. They viewed chickenpox as a less serious disease and believed the vaccine’s risks outweighed its benefits for public health at that time. Once researchers recognized the public health … Read more