Tamil Nadu Chief Minister C Joseph Vijay launched the National Pulse Polio Immunisation Campaign by administering oral polio vaccine drops to children in Chennai. The statewide drive aims to vaccinate 52.91 lakh children below the age of five through more than 43,000 vaccination centres. During the inauguration, Vijay's heartwarming interaction with a little child also went viral, becoming one of the most talked-about moments from the event. Watch the full story behind the campaign and the adorable moment winning hearts online