Veronica Campbell - Brown is cleared to return to competition by officials in her native Jamaica . But now the IAAF , track and field 's world governing body , will decide if she can go back . Campbell-Brown , Powell -- the former world-record holder in the 100 meters -- and Simpson all missed August 's world championships in Moscow , where fellow Jamaican Usain Bolt once again dominated the men 's sprint events . The three - time Olympic gold medalist , tested positive for a banned substance in May . Jamaican ##s Tina Powell and Sherone Simpson said in July they also tested positive .
Veronica Campbell - Brown is cleared to return to competition by officials in her native Jamaica . But now the IAAF , track and field 's world governing body , will decide if she can go back . The three - time Olympic gold medalist , tested positive for a banned substance in May . Jamaican ##s Tina Powell and Sherone Simpson said in July they also tested positive .