Russia's two-time world champion and Olympic silver medallist is in quarantine after showing symptoms which were eventually confirmed by a positive test.
The two-time world champion and Olympic silver medallist was tested three times after showing symptoms with only the first returning a positive result, according to news site Gazeta which credited original reporting from Mash.ru.
Medvedeva, who turned 21 on Thursday, insisted on being tested again after continuing to suffer symptoms and was found to be positive once more.
She is now isolating in Moscow and receiving treatment.
The news of her positive test comes 24 hours after another Tutberidze skater, Anna Shcherbakova, was forced to pull out of the Rostelecom Cup through illness with reports claiming she was suffering from pneumonia.