The 22-year-old was taken ill at the weekend, before being admitted to hospital for tests.
Chelsea manager Roberto Di Matteo confirmed this afternoon that the player had been diagnosed with viral meningitis - a strain of the disease which can be overcome without the need for medical treatment.
"I spoke to him and he feels better now," siad Di Matteo. "Hopefully he gets well ASAP."
Di Matteo said he was confident Sturridge would still be able to take part in the Olympics, but with the team due to meet next week a question mark over his potential involvement would still seem likely.
Coach Stuart Pearce can select a replacement up until July 25, should the Chelsea star be forced to pull out of the Games, with Scotland and Huddersfield striker Jordan Rhodes expected to be in the frame as his replacement.
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