The other two children, who were siblings, had not been vaccinated, the investigators wrote. Those children later spread chicken pox to their 17-month-old sibling, according to the report.

Those children later spread chicken pox to their 17-month-old sibling, according to the report. Chicken pox is caused by the varicella zoster virus. The same virus also causes shingles in adults.

The chicken pox vaccine became available in the U.S. in 1995 and, since then, cases of the virus in the U.S. have plummeted. But chicken pox still emerges from time to time. Montana public health ...

If you're concerned about the chicken pox virus, talk to you child's doctor, particularly about the pros and cons of having your child vaccinated against it. Image: Zametalov/Shutterstock.

The University of Iowa Research Foundation has been issued a patent for the first-known mutant chicken pox virus. The initial discovery was made in 1998 by Charles Grose, M.D., UI professor of ...

The University of Iowa Research Foundation has been issued a patent for the first-known mutant chicken pox virus. The initial discovery was made in 1998 by Charles Grose, M.D., UI professor of ...

Before the chicken pox (varicella) vaccine was introduced in 1995, kids could count on experiencing the illness as a kind of childhood milestone — the virus is super-contagious and spreads ...

Zoster is very common, affecting a third of Americans in their lifetimes, about a million people each year. Although it can occur at any age (as long as the patient has had chicken pox, even a ...