The FIA has been forced to replace its regular Formula 1 medical car crew for this weekend's Turkish Grand Prix.
Driver Alan van der Merwe and FIA Formula 1 medical rescue coordinator and deputy medical delegate Dr Ian Roberts both tested positive for COVID-19 ahead of the weekend.
As a result, neither have travelled to Istanbul for the 16th round of the 2021 world championship.
The FIA has instead replaced the duo with Formula E safety car driver, Bruno Correia and medical delegate Dr Bruno Franceschini.
Track action in Turkey gets underway on Friday with Free Practice 1 at 19:30 AEDT.