covid-19 cases in the country and the discovery of double mutant variant of the coronavirus, poses a challenge to India's tourism, travel and aviation sector that was at the cusp of a recovery.Hotel and airline bookings have declined 10-15% in the last 10 days or so, which can be attributed to the rising number of infections and resulting restrictions imposed by some states, said a senior official of a National Capital Region or NCR-based online travel company.Also Read | Lessons from India’s tryst with lockdown"Though, this is not a big threat at the moment, the recovery of the sector could be impacted if the number of cases keeps on rising," the person said requesting anonymity.For the week ended on 20 March, the average number of.