By Adrian Warner LONDON (Reuters) - Northern Ireland's four-times major winner Rory McIlroy has decided to pull out of the historic golf tournament at the Rio Olympic Games in August because of health fears over the Zika virus. "After speaking with those closest to me, I've come to realize that my health*and my family's health comes before anything else," the world number four said in a statement on Wednesday. "Even though the risk of*infection from the Zika virus is considered low, it is a risk nonetheless*and a risk I am unwilling to take." The 27-year-old McIlroy was due to represent Ireland, rather than Britain, at the Games and his withdrawal is the latest blow to golf, which is returning to the Olympics for the first time since 1904. More...