The 33-year-old took to Twitter to announce that she is doing fine after her visit to the hospital on September 12.
"For people who are worried about me getting hospitalised. Just want to tell you that right now am feeling much better. Acute exhaustion and viral fever!" she tweeted.
Basu, who was last seen in Vikram Bhatt's 3D horror Raaz 3, says she will celebrate the success of her film after she gets well.
"Raaz 3 is a super success! Thank you all for such amazing feedback on my performance. Feel so blessed and happy. Will be back on my feet soon to celebrate the success of my film Raaz 3," she said.
Photograph: Pradeep Bandekar