Mercedes team principal Toto Wolff has revealed that Lewis Hamilton is "not great" as he self-isolates after contracting Covid-19 earlier this week.
Hamilton is missing the inaugural Sakhir Grand Prix following a positive test returned less than 24 hours after his Bahrain Grand Prix victory.
Speaking to Sky Sports F1 at the conclusion of FP1 at the Bahrain International Circuit, Wolff said Hamilton was struggling to cope with his first missed weekend since he entered the championship at the Australian Grand Prix in 2007.
"He is not great," he said. "Covid-19 is something you mustn't take lightly and he is in safe hands, that is the most important.
"But it is those early days that are always not so nice. Mild symptoms and then obviously, as you can imagine, a race driver out of his car and combine it with Covid, he would rather sit in there [nodding towards the team garage]."
Hamilton must undertake 10 days of self-isolation which, backtracking to his test results last Monday, would take the world champion up to the day before practice for the season finale in Abu Dhabi.
It is as yet unknown whether Hamilton will return for the race at Yas Marina. If he is forced to sit out the race, it would provide George Russell with a second opportunity to prove himself against Valtteri Bottas.
GPFans is a multi-platform, multi-language brand dedicated to Formula One coverage. We bring you all the ins and outs of the sport, 24/7, everything from up-to-the-minute news and features to the latest viral stories and clips.
We believe that a new generation of exciting, outspoken drivers will make F1 more popular than ever before, and we want to give our users access to as much of their heroes as possible, on and off the track. From Lewis Hamilton to Max Verstappen, Daniel Ricciardo to Sebastian Vettel, we provide in-depth analysis of every every Grand Prix in the season, from Australia to Abu Dhabi.
With Formula One under the new ownership of Liberty Media, how the sport is being covered is evolving, and GPFans will look to be at the heart of this progression into new media, as one of the fastest-growing sites covering the king of motorsports.