Congress President Sonia Gandhi is in a "stable" condition and under observation at the Army's Research and Referral Hospital here after she was admitted late on Tuesday night with high fever.
No medical bulletin on her health has been issued yet by the hospital but according to Congress workers, she is recovering under medical supervision.
The 69-year-old Congress chief returned to the national capital on 2 August by a chartered flight close to midnight after she had to abandon the 8-km roadshow in Varanasi midway due to illness.
AICC media cell in-charge Randeep Surjewala said she is stable and is recovering under medical supervision.
"Yesterday itself, she had said that she would return to Varanasi to meet the people and to have 'darshan of the historical temple of Kashi Vishwanath Ji'. Upon her return, she was admitted to a hospital in Delhi. She is stable and is recovering under medical supervision", he said in a statement.
The Congress President is overwhelmed by the concern and affection of fellow countrymen and crores of Congressmen and has thanked everyone for their good wishes, he said.
Sources said doctors have kept Gandhi under observation as she was running high fever yesterday and was dehydrated due to exhaustion during the road show.
Congress vice president Rahul Gandhi and Priyanka Gandhi were by her side. Her son-in-law Robert Vadra also visited her.
Senior party leader Ghulam Nabi Azad had said on Tuesday that her condition was "stable" after she suffered a bout of "dehydration, vomited and had fever" in Varanasi.