The team said that Hamilton woke up Monday morning with mild symptoms and was informed at the same time that a contact prior to arrival in Bahrain had subsequently tested positive.
Hamilton matched Ferrari great Michael Schumacher’s seven titles in style, lapping sole title rival and team mate Valtteri Bottas on a nightmare afternoon for the spinning Finn.
Hamilton went past Bottas, who started at pole, in the 13th lap of the race after which it was a relatively comfortable run for the Brit.
Valtteri Bottas was fastest on Friday in an interrupted first practice for a Russian Grand Prix that could see Mercedes team mate Lewis Hamilton equal Michael Schumacher's all-time record of 91...
Reigning Formula 1 world champion Lewis Hamilton has launched a team to compete in next year's inaugural Extreme E racing series.
Earlier, Bottas led third and final practice. Bottas was 0.229 faster than Sainz and 0.323 quicker than Lando Norris after an impressive showing from the McLaren pair.