Mercedes says it will "announce its replacement driver plans for this weekend in due course”, the obvious options being reserve and development drivers Esteban Gutiérrez or Stoffel Vandoorne. Without recent F1 experience, however, there is a chance Mercedes could turn to Nico Hülkenberg, who has twice raced for the Mercedes-powered Racing Point team in 2020 when its drivers Sergio Perez and Lance Stroll tested positive for COVID-19 and were forced to sit out.
It added: "Lewis was tested three times last week and returned a negative result each time, the last of which was on Sunday afternoon at the Bahrain International Circuit as part of the standard race weekend testing programme.
"However, he woke up on Monday morning with mild symptoms and was informed at the same time that a contact prior to arrival in Bahrain had subsequently tested positive.
"Lewis therefore took a further test and returned a positive result. This has since been confirmed by a retest.
"Lewis is now isolating in accordance with COVID-19 protocols and public health authority guidelines in Bahrain.
"Apart from mild symptoms, he is otherwise fit and well, and the entire team sends him its very best wishes for a swift recovery.
"We will announce our replacement driver plans for this weekend in due course."
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