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.
However, shingles and chickenpox are caused by the same virus and you can catch chickenpox from someone with shingles, but only if youâve never had chickenpox before. Shingles develops when the virus from a chickenpox infection earlier in life, which has lain dormant (inactive) in nerve cells, suddenly reactivates.hingles is caused by the reactivation of the varicella-zoster virus, which is the virus that causes chickenpox. After you have had chickenpox, the varicella-zoster virus lies dormant (inactive) inside your body.