The France international is currently working his way back from a knee injury that has wrecked the start to his Bundesliga season.
And the 26-year-old must continue his rehabilitation alone after Bayern manager Louis van Gaal confirmed Ribery's wife, Wahiba, has been diagnosed with the virus.
Out: Ribery is struggling with a knee injury
The Blues and Real Madrid are being tipped to make fresh bids to sign Ribery next year after failing with summer swoops.
But any hopes Ribery may have of leaving Germany in January could be dashed if he was to contract the illness.
Chelsea won't pay over the odds for Franck Ribery as Bayern Munich prepare to sell Bayern Munich reveal Chelsea offered £58m AND full-back Jose Bosingwa for Franck Ribery Ribery could leave, says Munich chief Hoeness
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