HYDERABAD: On Friday, the Commissionerate of Health and Famiy Welfare informed that, the action has been started by the government of Telangana soon after type 2 polio vaccine virus has been discovered in Nagaole Nala. The actions include revalidation of health facilities and cold chain points in public as well as private sector of any tOPV i.e., trivalent oral polio vaccines; and self-declaration by government and private health facilities that they are not using tOPVs for the purpose of vaccination. The commissioner in reference with the initiated actions said that, the virus isolated from surveillance was just vaccine derived and there was no reason for concern.