Ricciardo was forced to sit out the Bahrain pre-season test after his diagnosis, prior to Vettel's positive test which meant that the Aston Martin driver had to skip the race.
Under the tight protocols in place over the past two years, there would have been no argument; a positive test for anyone in the F1 paddock meant they were out of action and forced to isolate. Sergio Perez, Lance Stroll, Lewis Hamilton, Kimi Raikkonen and Nikita Mazepin were all obliged to miss races at some point.
