Mia Farrow (C), UNICEF ambassador on polio eradication, visits a children's home in Kaduna, Nigeria on January 17, 2001. In her first mission since being appointed UNICEF Special Representative for Polio, actress Mia Farrow travelled to Nigeria to observe a countrywide polio immunisation campaign. [Mia contracted polio as a child, as did her son Thaddeus, who is paralysed as a result. ]