Fernando Alonso will take no part in media activities when his Alpine Formula One team presents its new car next Tuesday, with the Spaniard recovering from surgery to his jaw after a road accident, the team said on Friday.
The 39-year-old double world champion left the hospital on February 15 after being in a collision with a car while cycling near his home in Switzerland.
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"The sanitary situation and corresponding regulations in place do not allow him to do any communications and marketing activities while he undertakes his critical season preparation," the Renault-owned team said, without elaborating.
The season starts in Bahrain on March 28 and Alonso will be one of the big stories as he makes his Formula One comeback this season after an absence of two years.
Renault, the team with which Alonso won his titles in 2005 and 2006, has renamed its works team as Alpine to promote its sports car brand.