Berlin - International Olympic Committee presidential candidate Thomas Bach says it is "poison" to let positive doping tests cast doubt over all athletes' achievements.
Bach warns against the trap of suspecting athletes of doping at the upcoming world championships in Moscow due to recent positive tests of sprinters Tyson Gay, Asafa Powell and Sherone Simpson.
The German says "it is poison for a positive test to lead into the trap of doping suspicion. That's why we should always be aware of whom we are in this fight against doping for – for the clean athletes."
Bach, an IOC vice president, is vying to replace outgoing president Jacques Rogge, who is stepping down after 12 years. Rogge's successor will be elected on September 10 by secret ballot in Buenos Aires, Argentina.