Varicella vaccine Varicella vaccine Varicella vaccine, also known as chickenpox vaccine, is a vaccine that protects against chickenpox. One dose of vaccine prevents 95% of moderate disease and 100% of severe disease. Two doses of vaccine are more effective than one. If given to those who are not immune within five days of exposure to chickenpox it prevents most cases of disease. Vaccinating a large portion of the population also protects those who are not vaccinated. It is given by injection just under the skin. The World Health Organization (WHO) recommends routine vaccination only if a country can keep more than 80%
Technical change of capitalism (including creative destruction) is the subject of great contention by adherents of other systems of macroeconomic organization who see the end-result of obsolescence as the creation of a permanent underclass that has an unequal level of access to capital investment, educational resources that are not necessarily of their own making, while others seek to create an equal outcome for disproportionate labor or capital inputs that have not as yet been able to demonstrate a viable model that can compete against free-market economies on a near-term or long-term basis. Technical change A technical change is a term used in