The Polio National Immunization Day, which is also popularly known as ‘Polio Ravivar’, is being observed on Sunday (January 31) across the country including Tripura. The countrywide immunisation programme was earlier scheduled to start from January 17, however, it was deferred due to the Covid-19 vaccination drive which started on January 16. The three-day polio vaccination drive will continue till 2 February. The vaccination programme for the eradication of polio is organised twice a year. Around 17 crore children of less than 5 years of age will be given polio drops as part of the drive of Government of India to sustain polio free status of the country. The countrywide drive will be supported by about 24 lakh volunteers, 1.5 lakh supervisors and many Civil Society Organisations (CSOs), WHO, UNICEF, Rotary etc, it said. Healthcare workers will be visiting as many as 2 crore households to ensure that no child is left without the protection of the polio vaccine, the statement said. Health minister Harsh Vardhan also attended the event. He highlighted the mitigation measures and the efforts in strengthening routine immunization by the government.