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@ladyprowess · 04 Dec 2021

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when did the chickenpox vaccine come out

History, origin and when the vaccine was invented.

Is a highly contagious disease caused by the varicella-zoster virus that leads to itchy skin eruptions, which are sometimes compared to a “dew drop on a rose petal.” This disease has been in existence way back in the ancient time and was so contagious that it spread quickly in households, classrooms, community, and so on until the development of a vaccine. Before the development of a vaccine, Chicken pox was a serious and common illness among children in the late 20th century. More than four million people got chickenpox every year in the United States, resulting in more than 10,000 hospitalizations and 100 deaths. Since vaccinations began, those numbers dropped significantly. The CDC reports that fewer than 350,000 people contract the disease per year, and that there are fewer than 1,700 hospitalizations and 20 deaths annually from chickenpox.

Origin of Chickenpox

There is no know origin of the chicken, but history has it that the earliest known use of the term “chickenpox” dates to 1691—although it’s not clear how it got this name. It's believed the disease was brought to the Americas in the 15th century by European explorers and settlers. The disease spread quickly among Native Americans since Indigenous people had not previously been exposed to the virus. Before the 18th century, diseases that appeared to produce “pox,” or skin eruptions, were commonly lumped together.

This included chickenpox, smallpox and syphilis, which was known as “large pox” or the “great pox.” The first scientist to provide a detailed description of chickenpox differentiating it from smallpox was the English physician William Heberden. In 1767, he noted the physical differences between the two diseases, and also recorded that people who’d had chickenpox “were not capable of having it again.”
When was Chicken pox vaccine invented.

The first attenuated varicella vaccine was developed in Japan in the 1970s before finally making its way to the United States in the late 1980s. Upon being studied and finally approved by the CDC in 1995, the VZV vaccine was shown to be very effective at inoculating most populations against chickenpox. A second dose of varicella vaccine provides school-aged children with better protection against the chickenpox virus, compared to one dose alone or no vaccination. With improved protection provided by two-dose varicella vaccination compared with one-dose only, continued decreases in the occurrence of chickenpox, including more severe infections and hospitalizations, are expected as more children routinely receive dose two between the ages of 4 and 6 years.

CDC recommends two doses of chickenpox vaccine for children, adolescents, and adults who have never had chickenpox and were never vaccinated. It is recommended that children should receive the first dose at age 12 through 15 months and the second dose at age 4 through 6 years.

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