I am currently 10 weeks pregnant- I have just found out that my niece was playing with a friend all day Saturday who today has developed Chicken Pox. My niece currently is showing no signs of chicken pox, but I know that it can take between 10-21 days after contact for it to develop.



We are due to be spending xmas day with her and my family. My Mother cannot remember if I had chicken pox or not when I was younger. So I do not know if I am immune or not.



Please can you tell me if I should avoid spending xmas with them even if she does not show active signs of having the virus before xmas day?



Is there any vaccine either myself or my niece could have between now and then to make sure we are safe.



Appreciate you advice.



Thanks