The IAAF confirmed the decision four days before the start of the competition in Doha after hearing a report from its task force overseeing Russia’s reinstatement efforts.
Some Russians with no doping history have been cleared to compete internationally as neutrals.
Russia’s athletics federation (RUSAF) was suspended in November 2015 after a report commissioned by the World Anti-Doping Agency (WADA) found evidence of widespread doping in the sport.
World Championships
I am a clean athlete, says Hassan
05/10/2019 AT 22:27
Russian authorities have denied the existence of a state-sponsored doping programme in the country but have accepted that some senior officials were involved in providing banned substances to athletes, interfering with anti-doping procedures and covering up positive tests.