TN's taxi ambulance, Rajasthan's mobile OPD, oxygen nurses of Kerala, among India's best COVID practices In a letter to states, Union Health Secretary Rajesh Bhushan mentioned Prime Minister Narendra Modi's interaction with District Collectors and Municipal Commissioners of worst-affected States/UTs Share Via Email | A+A A- Nurses at the newly set up Corona Specialized Treatment Centre with 500 oxygen equipped beds, at Iron Ore Complex, in Salem. (Photo | PTI) By ANI NEW DELHI: The Union Health Ministry has written to States and Union Territories listing the best practices used by them while dealing with the COVID-19 pandemic including-- Tamil Nadu's taxi ambulance, Mobile OPD in Rajasthan, along with 12 other initiatives.