A gemstone is any rock or mineral that could be used for ornamentation or jewelry. Gemstones usually are minerals prized for their color, beauty, rarity, and endurance. Most often, the minerals are cut and polished to bring out the natural beauty of the piece.
The varicella vaccine is a live (attenuated) virus administered to protect against the viral disease commonly known as chickenpox caused by the varicella zoster virus (VZV).he varicella vaccine is marketed as Varivax in the U.S. by Merck and globally as Varilrix by GlaxoSmithKline.
Second Dose of Vaccine Even More Effective. Only a few cases were severe, however, prior to the vaccination era, the majority of kids experienced severe symptoms. Prevention of moderate to severe chicken pox was successfully reached after one dose of varicella vaccine - no cases were documented after the second dose.