The varicella vaccine is highly effective and decreases chickenpox cases significantly. Chickenpox is contagious 1-2 days before you develop a rash and until all blisters crust over. If untreated, ...

Varicella–zoster virus is the cause of both varicella (chickenpox) and herpes zoster (shingles). A live attenuated varicella vaccine was developed in Japan in 1974, and in 1995 it was approved for use ...

Patricia L. Foster is affiliated with the Union of Concerned Scientists and Concerned Scientists at Indiana University. In July 2021, a Centers for Disease Control and Prevention presentation obtained ...

Chickenpox used to be a common infection in the United States. For example, in the 1990s, about 4 million people got chickenpox every year, and more than 10,000 people experienced hospitalization. In ...

Being eligible for a free shingles vaccine was tied to lower dementia risk in Ontario. The findings were similar to those seen in other studies, including a "natural experiment" in Wales. An ...