It's all pretty heady stuff for Kwolek, who came up with Kevlar as a flameproof, ultra-light fiber to reinforce the tread of radial tires â not save lives. At the time, there were fears of a future global energy shortage, and DuPont wanted something that would make tires lighter and cars more fuel-efficient.
Risk Factors. The varicella-zoster virus is responsible for both chickenpox and herpes zoster, but its method of infection is different in both diseases. 1  Both the active varicella and zoster form of the virus can cause chickenpox.2  The shingles virus in its latent (inactive) form is never contagious.eveloping Shingles. Shingles itself can develop only from a reactivation of the varicella-zoster virus in a person who has previously had chickenpox. In other words, shingles itself is never transmitted from one person to another either in the air or through direct exposure to the blisters.
A: The varicella-zoster virus has been around for thousands of years. It is the virus that causes chickenpox and, later in life, can cause shingles. Varicella-zoster is highly infectious, entering through the respiratory tract and spreading throughout the body.aricella-zoster virus also can infect the liver and lung cells during chickenpox. Children can have a mild form of hepatitis from the virus, and also a mild form of pneumonia. It definitely does not establish latency in either the liver or the lungs.