A total of 774 students are on the campus and most of those who were infected were residents of Krishna and Jamuna hostels.
In a statement in the House, the chief minister said air ambulance service would be started at a cost of Rs 10 crore to transport critical patients to hospitals.
A man who had arrived from Nigeria and six of his family members who tested Covid-19 positive and their tests had 's' gene dropout were doing well and the officials of Greater Chennai Corporation were involved in monitoring the primary and secondary contacts of his family members, Tamil Nadu Minister Ma Subramanian said on Wednesday.
Within three weeks of lifting its mask mandate, the Delhi government on Friday made masks mandatory at public places with immediate effect, and imposed a fine of Rs 500 for any violation as coronavirus cases rise in the city again.
Most of those who tested positive either recently arrived from African countries or were in contact with such people.
All these persons have been kept in single room isolation at designated health care facilities by respective state governments and their close contacts have also been put under quarantine, the ministry said.