What is the saky virus?

I may be spelling it wrong. or I may have even hear her wrong.

My daughters nurse said the indentions in her tongue are not thrush but its something call the "sacky"virus.
My daughter has these indentions within her tongue that just started coming up on tuesday and she be complaining about her mouth on monday. She is two. I havent see any other symptoms.

Anyone know what this is?

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Answers:    I think you hear that incorrectly because there is no virus beside that name.

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