I would NOT get the chicken pox vaccine for my child. Although there is a small risk of getting the form of chicken pox that is more serious (about 1 in 65,000), it is still possible to have that happen even with getting the vaccine. Most cases of chicken pox are minor and then they get it overwith. Many children who go though the vaccine still get chicken pox, which means they got the vaccine unnecessarily. The vaccine is given at about 12 months then reboosted at age 5 to give 'added protection' although it is only suspected to last until the teen years. Ths is a major concern because then you have created a situation in which your teen has not yet had chicken pox, and it is known to be far worse and more painful to have the disease as a teen or adult, especially for a female that plans to have children.
Other concerns for many parents are that the vaccine is now suspected of causing infertility issues (the vaccine is so new that the side-effects have yet to all fully emerge...) as well as parental concerns over the way the vaccine is made and the ingredients that are in the vaccine. It is not simply the chicken pox virus, it also contains MSG, cow fetus serum, neomycin, residual components of human diploid cells, potassium, sucrose, gelatin....The virus for the vaccine was created from the infected lung cells of human embryos.
Additionally, other known/documented side effects of the vaccine include rash and flu like symptoms to bleeding, pneumonia, severe life threatening rash, skin infections, and nervous system effects including encephalitis (brain inflammation), seizures, stroke and Guillain-Barre syndrome.
It is definately a controversial vaccine, as many are these days. Weigh out the benefits vs the risks (on your own family's opinion) and make an educated decision.... I highly suggest reading up on this vaccine, and all the others so that you are well informed before injecting your little one with anything.... education is very important with such a serious decision...
I recommend Dr. Sears Vaccine book..it is not anti-vaccine, but rather reccomends unbundling those combo vacines, delaying certain vaccines until the child immune system is more mature to process it safer, provides all the info as to what is in each shot and what the potential benefits and risks to each...then you make the choice! There are many others as well and a full highly informative site at www.mothering.com
Good luck!