The following season, Kipketer contracted malaria and at first intended not to race at all. Eventually, he participated in three meets, winning in Monaco and running a swift 1:43.18 in Zurich. At the European Championships in Budapest but made physical contact with the eventual winner Nils Schumann on the final straight and did not win a medal. He came back in 1999 by finishing second at the Indoor World Championships and bettering that with a gold medal at the 1999 World Championship in Seville, Spain. As in 1997, Kipketer was undefeated in 1999, winning all 10 outdoor races and finishing the year ranked number one in the world in the 800m by Track &amp; Field News magazine.