Q: My son is 19 years old and stays in a different city. I want him to be vaccinated for typhoid. What is the name of the vaccine and how long he has to take it for protection against typhoid? Is there any particular single shot vaccine available?

A:There is an oral typhoid vaccine available called Typhoral. Please make enquiries with your doctor/medical specialist who can give further information and advise regarding this oral vaccine in terms of doses and precautions.