Ed Moran, a consultant in infectious diseases at the University of Bristol and North Bristol NHS Trust, said Smith "had active virus in his body" throughout.
The South Asian nation's total caseload now stands at 23.7 million.
According to a new tracker developed by researchers at Cambridge Judge Business School and the National Institute of Economic and Social Research, the number of new coronavirus infections in India has peaked.
The rate of infection was five times higher for people who tested negative during the Spring surge of the virus and then positive during the second wave.
Shahram said that testing and screening of teachers and students against corona infection would continue and measures are being taken to increase the testing facilities.