The Brihanmumbai Municipal Corporation (BMC) has taken the help of airport authorities to prepare a list of people who have arrived in the city in the past month from other countries. Also, at the local level, ward officials have been visiting each society and gathering information on people who have arrived from abroad. Help from marine and road authorities is also being taken to gather information on travellers.

A BMC officer said that people are giving incorrect information. He referred to the patient who was admitted to Mahim's Hinduja hospital after complaining of fever and cough, and was found to have COVID-19. The 64-year-old man had recently returned from Dubai. An enquiry revealed that he had misguided doctors about his travel history.