Humphrey Kayange is the star turn in Kenya 's rugby sevens team . But in his day job he works on research into improving antibiotics to fight disease . Kayange hails from the Rift Valley , an area renowned for long-distance running not rugby . Hide Caption
Humphrey Kayange is the star turn in Kenya 's rugby sevens team . But in his day job he works on research into improving antibiotics to fight disease . Kayange hails from the Rift Valley , an area renowned for long-distance running not rugby . Terrorist atrocities put bid for Kenyan IRB Sevens event under threat , he admits .