I work in a school and the year 1s have been taking it over the last lot of weeks, i was told to stay away from them until i was 20 weeks, so i did that but then i had z to my midwife that id been in contact with them again, but i was 26 weeks so i thought i was fine but she made me go and have blood taken to c if i was ok, even though id had them before. But my midwife z it was a personal choice as to whether to stay away from them or not. xx