Q: My wife is now 2 months old pregnant and last month she took vaccine for chickenpox. The name of the vaccine is Okavax. Then we asked the doctor if it was safe and he said that if pregnancy was not confirmed then there was no problem. But almost a month after taking the vaccine we got to know that she was pregnancy. Now I am really worried whether there this will cause any problem to the baby? I have read that the vaccine for chickenpox should be taken at least one month before pregnancy. So what can we do now?

A:It appears that chickenpox vaccine was taken without medical advice and without ensuring that your wife was not already pregnant. The correct procedure is to test pregnancy status, if not pregnant take the vaccine and use contraception to avoid conception for three months. Clinical trials to determine the effects of the vaccine when given to pregnant women have not been conducted due to ethical reasons. Animal studies have shown that the vaccine does not cause physical defects in the fetus. The relevance of animal studies to humans is not known. When taken inadvertently by pregnant women, no adverse reports have been received so far.