Neither is advisable. It is better that the child develops chicken pox at a younger age. This gives the child life long immunity. Whenever there is an infection it can be treated with Homoeopathy which reduces the severity and duration of the illness.
Health Tips
Chicken pox vaccines are manufactured from attenuated varicella virus. So the vaccine itself can create effects at a later date. It can lead to allergies. So it is advisable not to take the vaccine